Explanation:

- The sentence talks about an increase in the number of "pupils", which are countable. Therefore, terms used should reflect that it's about countable nouns.

- Option 1: "few more"

- "Few" is used with countable nouns, but "few more" implies a small, negative connotation of scarcity, which isn't suitable here.

- ?? Option 2: "a few more"

- "A few more" suggests a positive or neutral, small increase in countable quantity. It fits well with the context of "pupils" which are countable.

- CORRECT ANSWER

- Option 3: "a little more"

- "A little more" is used for uncountable nouns, making it an inappropriate choice since "pupils" can be counted.

- Option 4: "much more"

- "Much more" is mostly used for uncountable nouns or a large increase, not fitting within this context of a small expected growth.