Answer:
L
Explanation:
The details tell us that the substance starts out and its atoms are "close together and cannot slide past one another." This describes a solid: liquids and gases' atoms can move freely, but solids' atoms cannot move. So we know that the substance starts as a solid.
That means the answer must be L or P, because the solid needs to change into something else.
Then the substance gains energy and it can fill its container. Well, this could be either gas or liquid! So it's a good thing that <u>only L is an answer choice,</u> because that means L is correct and the change is from solid -> gas.
The appropriate response is classical conditioning. It is a learning procedure that happens when two boosts are over and over combined; a reaction that is at first inspired by the second jolt is at the end evoked by the primary jolt alone. Classical conditioning is the essential learning procedure, and its neural substrates are presently starting to be caught on.