Question

question
in context, which phrase should replace the vague pronoun \it\ in sentence 8 (reproduced below)?
upon reaching the ocean floor, it deployed high - resolution sonar systems to generate topographic maps of the terrain and utilized specialized lighting and camera arrays to document the biological and geological features of the environment.
a. vescovo
b. the explorers
c. the vessel
d. the mission

Explanation:

The subject that can deploy sonar systems and utilize lighting and cameras upon reaching the ocean - floor is most likely a vessel. A person (Vescovo, explorers) can't directly deploy sonar systems in this context, and the mission is an abstract concept that doesn't perform these physical actions.

Answer:

C. the vessel