Guys please help i really don't know the answer

The answer is Answer choice A

Step-by-step explanation:

Because 4-1=3

A. g-1=3 is a yes

B. 7=2g is a no

C. 1/2g=8 is a yes

D.  g^2=8 is a no

Step-by-step explanation:

A. move and add 1 to 3 and that equals g=4

B move and divide 2 to seven and that equals 3.5=g

C. move and divide 1/2 to 8 and that equals g=4

D. move and square 2 to 8 and that equals g=2.8...….

the answer is 8/21

hope this