Can we get the text you are getting this from?
In my opinion I think it's A it could be C but when you see someone around you physically see but you wouldn't call them strangers if you physically resemble and know the person. In answer a it says "emotionally disconnected" which can mean strangers but it can be temporary.
*This is a maths problem.
Answer:
-2
Explanation:
Average rate of change of the function from x = -3 to x = 1 can be calculated using the formula below:

Where,
(from the graph, when x = -3, y = 1)
(from the graph, when x = 1, y = -7)
Plug in the values into the formula:



Average rate of change from x = -3 to x = 1 is -2.