Acopper wire is stretched so that its length increases and its diameter decreases. as a result:
a. the wire's resistance decreases, but its resistivity stays the same.
b. the wire's resistivity decreases, but its resistance stays the same.
c. the wire's resistance increases, but its resistivity stays the same.
d. the wire's resistivity increases, but its resistance stays the same.

A) False; B) False; C) True; D) False

Explanation: In order to explain this problem we have to take into account the expresion of the resistence of the condutor wire, which os given by:

R=ρ*L/A where ρ, L and A are the resistivity, length and area of the conductor.

As it can be seen, the resitence is inverse to the area so when the diameter decrease the resistance should increase its value. (A, C).

The resistivity does not depend on the length or diameter of the wire, only it depends on the material use to made the wire.  (B,C and D).

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.