Final answer:
The statement is true - constructive and destructive interferences are the two types of interference.
Step-by-step explanation:
The statement is true. Constructive and destructive interferences are the two types of interference that can occur when two waves combine. In constructive interference, the amplitudes of the two waves add up to produce a larger amplitude. In destructive interference, the amplitudes of the two waves cancel each other out, resulting in a smaller or zero amplitude. Both types of interference can occur when the waves are precisely aligned or have phase differences.