Patryk rolls two standard number cubes 45 times. predict how many times he will roll a sum of 4

There are three ways to get a sum of 4 out of 36 possible die roles, so he gets a 4 1/12 of the time.  Thus, the expected value is 45/12=3.75, so the most likely amount is 4 times.

It should be a or d i’m not sure

3you can not round up to four, as there was not a full payment for the fourth night, so uou would round down to 3