Answer:

Step-by-step explanation:
Independent events:
If two events, A and B are independent, the probability of both A and B happening is the same as the probability of A happening multiplied by the probability of B happenings, that is:

In this question:
The statement is 
Answer:
4
Step-by-step explanation:
I think it’s A. Hope it’s right. Sorry if it’s wrong.
Answer:
placing the needle of the compass on one end of the line segment.