What does line $19$ in the code do$?$

O It renames each of the objects as just "Clouds", so there are still three objects but all with the same name.

It does nothing. You could comment out line $19\text{'}$ and nothing would change about the code.

It merges the three cloud objects ints each object to the list. There are still three objects, but they are now grouped together.

What is the purpose of the for$-$loop on lines $24$ and $25?$

This creates each cloud object and adds it to the cloud list

Chooses the highest magnitude value between the observation point and the cloud chunk

Calculates the $r-$sep for each cloud chunk.

Makes the $r$ value true or false depending on if obs$\_$pos $-$ c$.$pos is positive or negative