which sentence contains parallel structure? mekhi was finally finished with his chemistry homework. mekhi…

Brief Explanations:

Parallel structure means using the same pattern of words to show that two or more ideas have the same level of importance. In the sentence "Mekhi finished his chemistry homework and then finished his essay", the structure "finished...finished" is parallel. The other sentences do not have such a repeated verb - phrase structure.

Answer:

Mekhi finished his chemistry homework and then finished his essay.