The answer to that probably would be C excuse me if I am wrong.
Answer:
<h2>The answer is 9 kg</h2>
Explanation:
The mass of an object can be found by using the formula

f is the force
a is the acceleration
From the question we have

We have the final answer as
<h3>9 kg</h3>
Hope this helps you
The electrical protective device is designed to detect a difference in
current between circuit wires and interrupt the circuit and stop the
flow of electricity is : A.GFCI
It stands for Grand Fault circuit
interruptor, this will open the circuit when a difference in current is
detected between the existing wires