How can a wave carry information? A. The transmitter changes the form of the wave. The receiver then decodes the changes that have been made to the wave.

B. The transmitter changes the angle in which the wave is sent. The receiver detects the changes in the angle and decodes them.

C. The transmitter changes the wave type between mechanical and electromagnetic. the receiver detects and decodes these switches.

D. The transmitter sends a wave. The receiver reflects this wave. The transmitter then decodes the changes made to the wave.

i think its A

Explanation:

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.