Which transition word or phrase fits best in the blank in the passage
below?

Bats do not receive the appreciation they deserve. They are
friends to humans, even though they are usually not treated that
way. First of all, bats eat thousands of mosquitos each and every
night. They also eat insects that can destroy crops. (Please choose the answer below)
many bats pollinate the flowers that produce the fruits we eat.
Finally, guano (commonly known as bat poop) is one of the best
plant fertilizers known to man. Obviously, bats help humans in
many ways.


A) Thus


B) For example

C) Moreover