I believe the answer is A
Answer:
2ND ONE
Explanation:
HOPE THIS HELPS SORRY FOR CAPS
When you enumerate you need to put comas between all the items except the ones which are connected by "and" : as A is not correct as it does not have comas, and B is incorrect as it has comas where "and" is.
now, in a way both C and D are correct, but C is the usual accepted version, and D is an example of "Oxford coma" (where the coma is optional, to remain on the safe side, choose C).
They were invaded......................
The main idea is the first sentence (1). The rest of the sentences support the main idea that cockroaches have some amazing characteristics.