Final answer:
The statement that the ability to understand and respond between the speaker and the sender depends on how both of them heard and interpreted the message is true.
Step-by-step explanation:
Effective communication requires both the speaker and the listener to correctly interpret the intended message. Misunderstandings can occur if there is a discrepancy in how the message is conveyed or received.
In the communication process, sound is created by the speaker, which is person 1, through the vibration of their vocal cords. The air particles near the vocal cords also start to vibrate, creating sound waves that travel through the air. When these sound waves reach person 2, their eardrums vibrate, triggering a series of events that allow the brain to interpret these vibrations as sound, thus making it possible for person 2 to hear the conversation.
As for waves, the statement 'The amplitude of one wave is affected by the amplitude of another wave only when they are precisely aligned' is true as it refers to constructive interference, which occurs when waves align in such a way that their amplitudes combine.
On the other hand, the statement 'Waves can superimpose if their frequencies are different' is also true because superposition of waves can occur regardless of whether they have the same frequency or not.