Answer:

1.) Light travels in B. straight line.

2.) D. musical instruments are things that produces sound.

3.) Sound travels the fastest in E. solid objects.

4.) Sound travels the slowest in C. air objects.

5.) A. shadow is formed when light is blocked.

Explanation:

hope it helps.

Answer:

1.B

2.D

3.C

4.E

5.A

B

D

C

E

A