There has been no technological breakthrough that has affected olympic swimming

usually, a falcon can kill an owl, and horses don't normally eat each other.

this question is grammatically incorrect and is illegible to me so i can not answer.

the correct answer is b. in order to explain a point clearly in an essay, it is always better to include a clear example of your ideas. including an scenario in which a family is affected by consumerism will support your argument as well as supporting details, such as quotations from experts and statistics. option a could be correct, but statistics and quotations are supporting ideas rather than clear explanations. choices c and d are simply inadequate. they do not add information about the effects of consumerism, rather they are strategies for engaging the reader

whats the underlined word