My professor gave me a lot of useful advices when I was Writing my research paper.

Options

A. gave me a lots of useful advices
B. gave me a lot of useful advice
C. No improvement
D. give me lots of useful advices

Answer

B

Explanation

.advices. should be replaced with "advice.. The noun advice can be countable or uncountable. In more general, commonly used, contexts, the plural form will also be .advice..