The correct answer is B. A simple sentence expresses one complete thought; it's composed of an independent clause that follows the subject-verb pattern.
Explanation
A simple sentence is a syntactic unit that expresses a complete idea, which means it is an idependent clause. The sentence has a basic structure that is composed of a subject, verb (action), and complement. Simple sentences are independent clauses because their meaning does not depend on any complement that contextualizes them. An example of a simple sentence is "I play in the park with my friends". In this sentence the subject is "I", the verb is "game" and the complement is "in the park with my friends". According to the above, the correct answer is B.
C. Discovering vaccination and microbial fermentation
A microbiologist who discovered microorganisms cause fermentation. Eg. leading to food spoilage
There was a large desire for slaves because these slaves didn't need to be paid, as long as they were fed, they would be able to work for any amount of time for next to no cost at all.
vice president andrew johnson
In addition to the potential threat Iraq posed to the U.S., Pres. Bush had to take into consideration the threat against U.S. allies in the region. The 2003 invasion of Iraq resulted in the arrest of Saddam Hussein and the removal of his regime.