25 points answer asap

what happens when the temperature of an object increases?

a. the objects particles move closer together

b. the number of an object's particles increases

c. the object's particles stop moving

d. the object's particles move faster

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18