Which of the following is not a challenge to instituting sound global environmental policies?
a.
most changes are inexpensive and easy to implement.
b.
elected leaders who support unpopular environmental issues often are not re-elected.
c.
economic considerations outweigh environmental ones in many societies.
d.
there is no way to enforce international environmental agreements.

Most changes are inexpensive and easy to implement.

Explanation:

The societies developed on the basis of the unbridled exploitation of natural resources and until then they had no concern about the emission of pollutants. After the recent discoveries of science, scientists and environmentalists alerted the governments and a kind of collective cosciencia happened to be reproduced in scale. Today, the authorities are looking for alternatives to sustainable economic development, that is, countries must grow without harming the environment.

However, this is a difficult task, as it is necessary to change the mindset of people who view economic activity as just a way to make a profit. This is aggravated because sustainable alternatives are still costly compared to the traditional model. Thus, the issue of coscientization becomes increasingly relevant. If people are aware of the seriousness of the effects of global warming, greater social pressure can cause economic agents and politicians to adopt urgent environmental policies for the good of all.

a. Most changes are inexpensive and easy to implement.

Explanation:

Environmental policy refers to the actions that the government takes, as a result of the interaction of economic and social political interests, to conserve the natural foundations of human life and achieve sustainable development. Since the 70s, with growing environmental awareness, it has become an autonomous political sector increasingly important at regional, national or international level. In the governments of many countries there is a ministry in charge of environmental issues and green parties have been created. The definition of an environmental policy at company level is a requirement of environmental management systems certified as ISO 14001 or EMAS.

1960: wilma rudolph was the first woman to win three olympic gold medals in track and field at one olympic games. she was an american sprinter from tennessee, she was acclaimed the fastest woman in the world. she was among the most visible black women in america and abroad. she became a role model for black and female athletes. she was also known as a civil rights and women right's pioneer.

1973: billy jean king is an american former number one tennis player. she represented the united states in the federal cup and the wightman cup. for three years she was the usa's captain in the federation cup. she defends gender equality and has been a pioneer for equal and social justice. at the age of 29, she won "the battle of sexes" tennis match against the 55 year old bobby riggs. she was also the founder of women's tennis association and the women's sports foundation.  

1983: tamara mckinney becomes the first american female skier to win the alpine world cup overall championship top. she was the only american to hold that title for a quarter century until 2008.

1992: manon rhéaume, from canada,   becomes the only woman to start in a national hockey league game in an exhibition game for the tampa bay lightning . she played on the canada women's national ice hockey team winning gold medals in 1992 and 1994. and silver medals in 1998. manon marked the first time a woman appeared in a regular season professional game with her first appearance against the salt lake golden eagles.

2013: serena williams won 78 of 82 matches at the age of 31. she is an american professional tennis player. she reached the number 1 ranking for the first time on july, 8, 2002. at the age of 16, she played against karsten braasch the battle of sexes. she was the highest paid female athlete in 2016. she is a unicef ambassador .