What does the bold appositive phrase refer to?
The dragon, a giant reptile with scaly wings, roared at Chris Sale.

the krebs cycle and electron transport occur in the mitochondria, though other than that i would need to know more information.

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