Who is they?
The shipping company harvests lobster for their business, because they receive a high demand for this type of seafood.

OPTIONS:
- The shipping company
- lobster

A:
The shipping company

Who is they?
Walmart is promoting their Black Friday sale heavily in commercials, since they are the best medium to get information out to the average consumer.

OPTIONS:
- Walmart
- commercials

A:
commercials

Who is it?
A motorboat turns the propeller pushing the water backwards, thus it moves forward.

OPTIONS:
- A motorboat
- the propeller

A:

A motorboat