Answer: 
Step-by-step explanation:
Given

GCF or HCF of the two is the highest common factor

It is clear GCF is 
A. the ability of your heart and lungs to work during prolonged exercise.
Hope this helps!:)
Answer:
(2^2)^3/2 = (2)^3 = 8
Step-by-step explanation:
So to solve (4)^3/2 ,you have to realise that you need to remove the denominator in the exponent value which in this case is 2
In order to remove the 2,you would need a 2 in the numerator of the exponent .While understanding all this the value 4 can be equated as 2^2.
Thus your means of getting a 2 in the numerator is solved by simply replacing the 4 with 2^2
Thus what you will get is (2^2)^3/2
Now we have a property in exponent where
(x^m)^n = (x)^mn
Thus (2^2)^3/2 = (2)^3 =8