choose the correct one.

a) I wore all of the safety equipment for skateboarding; however, I still hurt myself.

b) I wore all of the safety equipment for skateboarding, however, I still hurt myself.

c) I wore all of the safety equipment for skateboarding however; I still hurt myself.

d) I wore all of the safety equipment for skateboarding; However, I still hurt myself.

My guess is: B

choose the corect one.

a) Prateek's and Skyler's computers have been upgraded to increase performance, capacity, and durability.

b)Prateek and Skyler's computers have been upgraded to increase performance, capacity, and durability.

c) Prateeks' and Skylers' computers have been upgraded to increase performance, capacity, and durability.

d)Prateek and Skylers' computers have been upgraded to increase performance, capacity, and durability.

Nope.

then is it C and is the other one D??

anyone help asap

Both are A.

when is a semi colon used?

http://theoatmeal.com/comics/semicolon