I think the answer is b,c, and d
I hope this helps
ANSWER
Two different species of mice migrated to the river from different directions.
EXPLANATION
Solved scientifically in my head.
A command
Definition: an official order or proclamation issued by a person in authority.
A simple sentence contains one independent clause, a compound sentence contains 2 independent clauses, and a complex sentence contains one independent clause and one dependent clause.
An example of a simple sentence to describe your morning routine could be:
I wake up an hour before school.
An example of a compound sentence could be:
I usually eat cereal for breakfast, but sometimes I eat toast instead.
An example of a complex sentence is:
After I eat breakfast, I get dressed.
