Answer is A. Marco believes that cowboy boots are cool. He sees many people on the street wearing them and decides to buy a pair for himself.
Inductive reasoning is the opposite of deductive reasoning. On one side, deductive reasoning begins with a general statement or idea, then evaluates and analyses the chances to arrive to a logical conclusion. On the other, inductive reasoning creates wide generalizations based on particular observations. Basically, there is information, and then conclusions are made based on that information.
In the case of Marco, he makes a particular observation (many people wear boots on the street), and then arrives to a conclusion (he assumes that boots are cool), so he decides to go with that (he buys himself a pair of boots).
Standing water is not good for the environment so it needs to be vanished and shall no longer be around humans or animals that can catch the deadly disease malaria !
Elizabeth is the first one to say the rockpile is unsafe.
The correct answer for the question that is being presented above is this one: "Such shameless Bards we have; and yet 'tis true,
There are as mad, abandon'd Criticks too.
And always List'ning to Himself appears.
All Books he reads, and all he reads assails,
From Dryden's Fables down to Durfey's Tales.""
The rhetorical device used in this sentence is repetition.
Hope this helps =)