What does the phrase "throws a wrench into" mean?

The expression is most likely a variation of the idiom. to put/throw a spanner in the works. It describes the act of sabotaging or hindering a plan or project.

The saying is to try and stop something. It can sometimes also mean to give up.

put the trash into the back of the truck and drive the truck to the back. then you must unload the truck.

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