The first one (facts and details)
B. The sentence needs a clearer controlling idea
Answer:
Here is the correct version below.
Explanation:
Our class went on a spring trip to Baltimore, Maryland. It was really fun. In the morning, we strolled along the Inner Harbor and looked at all the sailboats. We saw a tropical rain forest and a coral reef at the National Aquarium in Baltimore. Later, we visited Fort McHenry. The flag that waved over this fort gave Francis Scott Key the idea to write "The Star-Spangled Banner." Finally, we toured the USS Constellation. It was one of the first U.S. warships built in 1797.
