Complete the stressed college student's email to their academic advisor by choosing the correct word for each blank.

The professor gave me some excellent advice on my essay. She noted that my research was solid, but I needed to cite a few more sources to properly back up my arguments.

The professor gave me some excellent advice on my essay. She noted that my research was solid, but I needed to cite a few more sources to properly back up my arguments.

Advice and research are uncountable nouns in English—they never take an "-s" at the end, even when there is a lot of it!

Sources, on the other hand, is a countable noun. Because the sentence uses "a few more," we need the plural countable form. "Informations" is incorrect because "information" is always uncountable.