Final answer:
The sentence 'Mihn drew a picture that had trees, mountains, and rain clouds' uses parallel structure, aligning each element in a list that follows the verb 'had' to create grammatical consistency and rhythm.
Step-by-step explanation:
To revise the sentence so it uses parallel structure, the correct option is "Mihn drew a picture that had trees, mountains, and rain clouds." This revision aligns the sentence elements by presenting them in a series that all serve as the objects of the verb 'had,' thus maintaining grammatical consistency and creating a pleasing rhythm in the sentence.
When we say 'Mihn drew a picture that had trees, mountains, and rain clouds,' each item in the list directly follows the verb 'had,' which establishes parallelism. This is unlike the other options where the parallel structure is interrupted by phrases such as 'it was raining' or 'falling was the rain,' which do not match the other elements in the series.