As shown in the picture above, a sled of mass 67 kilograms is pulled horizontally to the right by a rope which exerts 800 N of force. As a
result, the sled moves at a constant velocity. The coefficient of kinetic
friction between the sled and the ground is (round to nearest hundredth
(2nd decimal place i. e. 0.18).

Explanation:

F net of sled = Tension force by rope - Kinetic friction between ground.

F normal of sled = mg = (67kg)(9.81kg/m^2) = 657.27N.

Kinetic friction = 0.18 (I cannot see the value) * Normal force of sled = 0.18 * 657.27N = 118.31N

So F net of sled = 800N - 118.31N = 681.69N.

(I cannot see what the question is asking for, please check on your own!)

i think the answer is a, hope this : )