In its most popular episode, the TV show ‘Them & I' featured a football coach who cared for his Alzheimer’s stricken wife, musicians who wrote a song for a vegetable-themed children’s movie, and an appeal to donate old toys to poor children.

A. an appeal
B. appealed
C. appealing
D. he has appealed
E. that he has appealed
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A. an appeal
the TV show featured a football coach, musicians, and an appeal
all are noun and perfectly parallel (correct)

B. appealed

one can be tempted here and mark this as correct answer ---because it seems featured and appealed are parallel to each other but this is not the case
the sentence says that the tv shows feature 3 things and list out those three things parallelism is over there

C. appealing
incorrect parallelism ---we need noun,noun, and noun---appealing is adjective so is not parallel

D. he has appealed
incorrect parallelism and what does he refers to

E. that he has appealed
incorrect parallelism--the TV show featured a football coach, musicians, and that he has appealed

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