A sentence is given with a phrase highlighted in bold. Which of the phrases given below the sentence should replace it improve the sentence? If the sentence is correct as it is given and no correction is required, select 'No correction required' as your answer.
Seeing his desperate struggle, the manager gave him an advice.

Options

A. gave him much advices.
B. gave him a lot of advices
C. gave him many advices.
D. gave him a bit of advice