help.. pretty pleasee

Answer:
Third option, [tex]\frac{10}{h} = \frac{8}{12}[/tex]
Step-by-step explanation:
Using similar triangles, 8 foot shadow is similar to 12 foot shadow and 10 foot pole is similar to 'h' foot pole. This can be observed by looking at the angles.
Thus
[tex]\frac{10}{h} = \frac{8}{12}[/tex]