Final answer:
The statement about the two types of wave interference being constructive and destructive is true. It is also true that waves can superimpose if their frequencies are different, leading to phenomena such as beats in acoustics. The statement is a) True.
Step-by-step explanation:
Poor word recognition seems to be mixing up different concepts. The question actually pertains to the phenomena of wave interference. Regarding the statement on interference, it is true that there are two types of interference: constructive and destructive.
Constructive interference occurs when two or more waves superimpose and the amplitudes reinforce each other, leading to a larger amplitude. Destructive interference happens when the waves superimpose and their amplitudes cancel each other out, resulting in a reduced or nullified amplitude.
As for the second statement about waves, it is true that waves can superimpose if their frequencies are different. This is the principle behind the phenomenon of beats in acoustics, where two sound waves of slightly different frequencies interfere with each other producing a wavering sound due to constructive and destructive interferences at different points in time.