Answer:
B. Luz trained with Coach Davis, and with practice Luz excelled at the sport.
1.B 2.A 3.C 4.D 5.A 6.D 7.A 8.B
A colon because it's formal.
I would go with the last one, the way its described seems scary and uninviting. and for instance maybe if you were somewhere that you enjoyed or wanted to be the bug would bother you, but in this case they don't seem like an main concern.