I think the answer to this is increased struggle in relationships.
Answer: d group
Explanation: In group therapies, several people who share a common problem all meet regularly with a therapist to help themselves and one another; the therapist acts as a facilitator.
Answer: Zoonosis
Explanation: Rabies, the plague, and West Nile virus are transmitted through a bite from an animal that is infected. Not sure if anthrax is transmitted through a bite as I just know you just need to come in contact with an animal who has it.
West Nile comes from mosquito bites, rabies from any rodent, canine, mammal, ECT, and the plague originally came from rats who had the black plague.
I hope I helped bud.