D) 15"
1) Since a photograph has the shape of a rectangle whose width is 4 and h = 6
2) We can solve this by writing a proportion, and assuming they are proportional polygons
[tex]\begin{gathered} \frac{4}{6}=\frac{10}{x} \\ 4x\text{ =60} \\ x=15 \end{gathered}[/tex]3) Hence the height of the new enlarged photo will be 15 inches
