Pls help I need this

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

What is meant by the statement" the melting poin of glycerine is 13 degree celsius