Please help me!!!! :) I just have these 2 questions left :)

What was the silicon valley named after?
A. Elements studied in chemistry
B. Gel used in the medical field
C. Material used in new constitution
D. Chips used in computers

How did Alfredo Quinones Hinojas first enter los estados unidos?
A. By immigrating
B. By driving across a checkpoint
C. By crossing in an underground tunnel
D. Bt flying into el paso, texas