Answer
$C). 12.3m$
Work Step by Step
We know that
$Y_{max}=\frac{v_{\circ}^2sin^2\theta}{2g}$
We plug in the known values to obtain:
$Y_{max}=\frac{(9.92)sin^2 75.0^{\circ}}{2(3.72)}$
$Y_{max}=12.3m$
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