The senior class took a trip to Washington, D.C. and Annapolis for their research project.

A Compound*
B Simple
C Complex
D Compound-Complex

6 answers

Yes, compound.

One subject and one verb --

class | took
One subject and one verb = ________________ ??

https://www.espressoenglish.net/english-sentence-structure-4-types-of-english-sentences/
Is Ms. Sue, and writeacher real teachers? Might be getting wrong answers.
Also Ms.Sue already answered the question.
That's a simple sentence, Sue.
The correct answer is simple. I just took the test