A. The jellyfish floated in the current, glowing a gentle blue, and stung a diver in the rear.

B. The jellyfish floated in the current, glowed a gentle blue, and stung a diver in the rear.
C. The jellyfish floated in the current, glowed a gentle blue, and a diver was stung by it.

Definitely not A!

Which sentence has all 3 main verbs in the same tense?

(Choice B)

B
The jellyfish floated in the current, glowed a gentle blue, and stung a diver in the rear.

(Choice A)

A
The invaders torched the village, looted the treasury, and stole all our sheep.

The correct sentence among the given options is B: "The jellyfish floated in the current, glowed a gentle blue, and stung a diver in the rear."

To determine the correct answer, you can analyze the sentence structure and consider the subject-verb agreement and parallelism.

In option A, the phrase "the jellyfish floated in the current" establishes the subject of the sentence, but there is a missing verb for the second clause after the comma.

In option B, the sentence structure is clear and consistent. The verb "glowed" agrees with the subject "jellyfish," and the verb "stung" agrees with the subject "jellyfish" as well. This creates parallelism, which is crucial for maintaining proper sentence structure.

In option C, the sentence structure is grammatically correct, but it introduces a passive construction by stating that "a diver was stung by it." While it is still a valid sentence, option B conveys the action more directly and actively by stating that the jellyfish "stung a diver."

In conclusion, option B is the correct sentence as it is clear, grammatically accurate, and maintains parallel structure.