You are asked to write a short paragraph about the impact of positive friendships on academic performance in the classroom. Which sentence would be the most effective topic sentence for this paragraph?
A) Many students enjoy spending time with their friends during breaks.
B) Friendships are essential for emotional well-being, both inside and outside school.
C) Collaborative learning, fostered by strong classroom friendships, significantly enhances problem-solving skills and overall academic success.
D) Some studies show that students with more friends tend to be happier.
E) Having a friend to share notes with can be helpful sometimes.
