Answer:
6.77 x 10^-13 Newtons
Step-by-step explanation:
using the formula

where G is the gravitation constant which is 6.673 x 10^-11 N m2/kg2
M = mass of the first object which is 0.25 kg
m = mass of the second object which is 0.65 kg
and r is the distance between the objects which is 4 metres
Plugging our values in:

F = 6.77 x 10^-13 N