Answer:
B. lacking parallelism
Step-by-step explanation:
The original sentence contains a predicate nominative (singer) and an action verb (plays), which shows lack of parallelism.
The best way to fix the error would be to use a parallel structure, which is the repetition of a certain grammatical form within a sentence:
"Shelia E. sings and plays the drums."
Now the sentence uses two action verbs sings and plays in the present tense, and this is an example of parallelism.