Answer:
D
Step-by-step explanation:
The midpoint formula is
[tex]M=(\frac{x_{1}+x_{2} }{2},\frac{y_{1}+y_{2} }{2})[/tex]
Filling in our coordinates where they go gives us:
[tex]M=(\frac{1+4}{2},\frac{1-16}{2})[/tex] so
[tex]M=(\frac{5}{2},\frac{-15}{2})[/tex]
