The gravitational force of attraction F between two tiny masses m1 and m2 that are separated by a distancer
is F = G?. In the SI system force has units of kg
m/s. Use the given gravitational force formula to de-
termine the SI units of G in terms of the fundamental
quantities of mass, length, and time.

Gravitational force formula:

F=Gm1m2/r^2

Now see

F=Newton (N)

m=Kg

r=meter

Explanation:

F=Gm1m2/r^2

N=(G)×kg×kg/m^2

N=(G)×kg^2/m^2

N×m^2/kg^2=G

G= N×m^2/kg^2

G=N.m^2/kg^2

This is the final unit of G:N.m^2/kg^2

Hope you understand

whichever one it is, it's definitely not one that you included on the list you provided.