The U. S. Securities Act focuses on investments through the a. Preferred market.
b. Common market.
c. Secondary market.
d. Primary market.

c. Secondary market.

Explanation:

The U.S. Securities Act was passed in 1933 in the aftermath of the Great Depression which saw the Stock market crash and investors lose massive amounts of money.

The Act is meant to regulate the activities of the Stock market which is where stocks that have already been issued are traded. This means that the stock market is a secondary market therefore the Act focuses on investments through the secondary market.

what are the options

explanation:

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'