Which option is an example of a complex sentence? a. animal testing is cruel because animals suffer horrible deaths. b. the practice of animal testing should be stopped and the labs dismantled. c. animal testing is a cruel way to advance the progress of science. d. animal testing is cruel, and it should be stopped immediately.

A complex sentece is a sentence which contains an independent clause and at least one dependent clause. So, the correct answer is letter D.

Explanation:

Independent clause: Animal test is cruel.

Depedent clause: and it should be stopped imeddiately.

the answer is:

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

hope it !

c. to understand which information will best persuade your readers. (apex) correct answer.