Answer: option B: conduction.
Conduction is the heat transfer that happens between two bodies in direct contact, due to the collision of the molecules, atoms and electrons within the body (microscopical level).
Answer:

Explanation:

1+7 = 6+2 =8 -protons
1+15 = 12+4 = 16 - protons +neutrons
Does it not tell you how long it took it to reach the ground? Constant Velocity should be distance over time
Answer:
C- Choosing variables and controls
Explanation:
Correct on edge.
See attachment file below.
Hope it helped!