Answer:
<h2>C. maintenance </h2>
Explanation:
I personally believe one key disadvantages is the cost of maintaining the equipment unlike the gym where you have to subscribe for the month or the year and forget about anything, owning the gym equipment comes with the extra cost and responsibilities of maintenance to the owners.
It is an example of balanced force.
hope this helps. good luck
The correct field line would be A.
A. An electron has far less mass than either a proton or neutron.
