It is d I have done this before
Answer:
There are three possible results of a correlational study: a positive correlation, a negative correlation, and no correlation. A positive correlation is a relationship between two variables in which both variables move in the same direction.
11m + 19a = 0
11m = -19a / : (-19)
-1.72m = a
Options two refers to the author being a teenager himself so he would be reliable for this info because it is firsthand.
Answer:
learned
Explanation:
also learnt is grammatically correct