The correct answer is comma.
You cannot join two independent clauses in order to make a compound sentence just by using a comma. If you only use a comma (without any conjunctions), then this is going to be a run-on sentence.
For example:
I saw a boy at school, I think he is the most beautiful boy in the world.
Because you didn't use a conjunction (and) or a semicolon, this sentence is compound, but it is incorrect.
Parvana is an 11-year-old girl who lives in Kabul, Afghanistan with her mother Fatima, her father, her older sister Nooria, and two younger siblings, Maryam and Ali.
Drier, more dry is grammatically incorrect.