Scientists previously thought that all electric eels belong to a single species, but a team of researchers led by zoologist C.David de Santana proved this idea wrong by____that there are in fact three distinct species of electric eels.

Which choice completes the text with the most logical and precise word or phrase?

The details and facts help to draw the main idea of the passage.

Can you summarize what you’ve understood in the above steps?

Choice A is incorrect. Pretending that there are three species of electric eel might be a fun game for marine biologists, but itwouldn’t prove the existence of more than one species.

pretending

Choice B is incorrect. Complaining won’t prove anything about eels,so de Santana could not have proved wrong the idea of only one species of electric eel by complaining about it.

complaining

Choice C isincorrect. “Requiring” means “needing.” It wouldn’t make sense to say that de Santana “needed” there to be three distinctspecies of electric eel.

requiring

Choice D is the correct answer. “Demonstrating” means “showing,” and the text describes how de Santana disproved a previousbelief in only one species of electric eel by showing that three electric eel species actually exist

demonstrating

Correct sentence

The choice that completes the text with the most logical and precise word or phrase - demonstrating

Choice

D

Can you summarize what you’ve understood in the above steps?