Answer :

Answer:

b. 2

Step-by-step explanation:

Amplitude in this case will be:

[tex] \frac{maximum \: displacement \: - \: minimum \: displacement}{2} [/tex]

[tex] = \frac{3 - ( - 1)}{2} [/tex]

[tex] = \frac{3 + 1}{2} [/tex]

[tex] = \frac{4}{2} [/tex]

[tex] = 2[/tex]

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