Answer:
The amplitude of the sinusoidal function is 3
Step-by-step explanation:

Can you take a better picture?
Actually the correct answer would be letter D. 89.7 mark as brainliest thanks
Informally: When you multiply a whole number times itself, the resulting product is called a square number, or a perfect square or simply "a square." So 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, and so on, are all square numbers