The correct answer is D. misplaced modifier. A misplaced modifier is a word or a phrase that is located in the wrong part of a sentence - meaning that it makes an error of being separated from the word or a phrase it is supposed to modify, or describe. Here, the misplaced modifier is with an incredible sound system, <span>because the way this sentence is written, it would seem this modifier refers to the summer vacation, and not to the convertible Mustang.</span>
I'm pretty sure that the answer is a 'Rhetorical Question' however I may be wrong
Both inventions were done by teenagers at their times.
Both inventions claimed to help the environment: Boyan Slat's machine would clean up trash floating in ocean. Duro-Aina Adebola, Akindele Abiola, Faleke Oluwatoyin, and Bello Eniola proposed power generation from urine that would not create carbon monoxide.
Unfortunately both inventions were also challenged by more established scientists and engineers.
I'm thinking either "Using numbers to help readers see the various steps easier," or "adding a supply list before the instructions." (I'm sorry I couldn't give a more clear answer, but I hope this helps narrow down the choices)
