The correct option is A 4 feet
Given,
height of prism =10 feet.
volume of prism =160 feet3.
Also, base is square i.e. length is equal to width.
We know that,
Volume of prism = length × width × height
⇒160=10×(length)2
⇒16=(length)2
⇒4×4=length×length
⇒4=length
⇒length=4 feet
Hence, measure of base length is 4 feet.