Question

which sentence uses reinforce correctly? reviewing your notes can reinforce your understanding of the topic. she reinforced quickly. he reinforced his backpack to school. the sun reinforced in the sky.

Explanation:

The verb "reinforce" means to strengthen or support. In the first - sentence "Reviewing your notes can reinforce your understanding of the topic", it is used correctly as reviewing notes strengthens one's understanding. In the second sentence "She reinforced quickly", it is an incomplete usage as it doesn't say what is being reinforced. In the third sentence "He reinforced his backpack to school", the usage is incorrect as you don't "reinforce" a backpack in the context of going to school. In the fourth sentence "The sun reinforced in the sky", it is an incorrect usage as the sun doesn't "reinforce" in the sky.

Answer:

Reviewing your notes can reinforce your understanding of the topic.