I think it's D
again sorry if I'm wrong it just makes the most sense
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.
<em>Tania let her borrow the ipad, but she asked her to be careful </em>is a compound sentences because of the use of 'but'. Whenever you use <em>but, and </em>or <em>so</em> in a sentence, you are writing or stating a compound sentence since you are joining with such conjunction two independent clauses.