Answer
$15.66MeV$
Work Step by Step
We can find the required energy as follows:
$m_f=15.003065+1.008665u=16.011730u$
Now $\Delta m=m_f-m_i=16.011730-15.994915u=0.016815u$
We know that
$E=\Delta mc^2$
We plug in the known values to obtain:
$E=0.016815u(\frac{931.5MeV/c^2}{1u})c^2=15.66MeV$
