Yes looks like it is correct grammar
The answer is B, a team of explorers are studying the ocean floor
In any story, or a specific one?In general, a protagonist is the main character, the person who takes the center-stage in a story. For example, Katniss in the Hunger Games, or Holden Caulfield in the Catcher in the Rye
The author could be referring to a cage to describe the feelings of the person's life. using the word cage to identify the emotions from the person. Maybe the person, the author is writing about feels like he or she is stuck in the circumstances of everyday life referring to a cage. He or she could be dealing with tough situations and they could be feeling trapped like in a cage. The author could be describing the patterns of the person's way of making decisions. which hinders them and causes them to make wrong choices That keeps them stuck in a cage emotionally.
In the spring of 1846, a group of nearly 90 emigrants left Springfield, Illinois, and headed west. Led by brothers Jacob and George Donner, the group attempted to take a new and supposedly shorter route to California