What sentence is it?
the room was full, so i had no place to sit.
a. simple b. complex c. compound

C. Compound.

Explanation: a simple sentence is a sentence that is formed only by one independent clause (a phrase that has complete meaning on its own), a complex sentence is formed by a independent clause and at least one dependent clause (a phrase that doesn't have complete meaning on its own), and a compound sentence is formed for at least two independent clauses, in this case "the room was full" and "i had no place to sit."

the answer is:

b) to show the progression of inventions that took place in the bicycling industry.

hope it !