Answer:
Addiction is defined as a chronic, relapsing disorder characterized by compulsive drug seeking, continued use despite harmful consequences, and long-lasting changes in the brain. It is considered both a complex brain disorder and a mental illness.
Dogs can help both children and elders in their daily needs
Answer:
I think its A but I'm not 100% because there is no paragraph present
Answer:
It simply refers to the word their.
The last sentence is correct, because the other ones either had periods in the middle or too many commas in them.