there should always be ______ space(s) after the periios at the end of a sentence

A: 1
B: 1.3
C : 2
D : 2.5
I got A.
To key a capital letter K, hold down the ______ key while pressing the K key.
A : Right skin
B : Right Alt
C : Left Shin
D : Left Alt
I got A.

Your first answer is correct.

For your second sentence and choices, I don't know what "skin" and "shin" are.

Omg excuse me typo haha , i meant

A: Right shift
C: Left shift

I disagree with your choice for the second one.

But why would it be "C" if the right shift key is closer the the "K" key?

Because you hold the left shift key down with your LEFT hand while you press the K key with your RIGHT hand.

Efficiency.

Ohh okay that makes sence thank you :)

You're welcome.