Answer:
Mrs. Foster's class had the most students in class that Friday
Explanation:
Mr Lopez - 92.5%
Mrs Foster - 19/20
Mr Kelly - 0.9
Let's say that there were 40 students in class
92.5% of 40 would be 37
So
Mr Lopez's Class had 37 students.
19/20 of 40 would be 38
So
Mrs Foster's Class had 38 students
0.9 of 40 would be 36
So
Ms Kelly's class had 36 students
Therefore, from looking at this, the answer would be Mrs Foster's Class