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The following question: Solve the problem. The brightness of a young star increases and decreases as a result of regional areas of hot and cold

The following question:

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Solve the problem. The brightness of a \"young" star increases and decreases as a result of regional areas of "hot" and "cold" on the star's surface as well as variations in the density of the star;s planet-forming debris, which can obstruct light. Suppose that for a particular star, the average magnitude (measure of brightness) is 4.4 with a variation of $0.32 (on the magnitude scale, brighter objects have a smaller magnitude than dimmer objects). Furthermore, the magnitude of a star is initially observed to be 4.72, and the time between minimum brightness and maximum brightness is 6.4 days. Write a simple harmonic motion model to describe the magnitude M of the star for day t. Select one: 5:t \"a. M: 4.4 0.32c0s a b. M = 4.4 0.32 cos(::I) 5n" :'\\ c.M=4.4+0.32os I 16 'NdM44+032 5\": _ _ . . cos 32

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