Even though I've always been food at math, it's not my favorite subject.
C.
Complete Sentence
I dropped my phone three times on my into the building, it didn't break.
B.
Run-On
Andrea's brother has two children, her sister has four children.
C.
Complete Sentence
I am almost finished with college, my dream is to open my own business.
B.
Comma Splice
Alisha passed her licensing exam last week.
C.
Complete Sentences
Darwin's argument tells us that species develop their traits through natural selection due to competition, survival and reproduction. Diversification of species is an important part to make his argument valid because diversification suggest extinction of specie if it doesn't survive.