Answer:
A. An Overhead valve design for with solid lifters
Explanation:
<em> i took the test </em> bruv
Free energy given out by companies, like light companies will make the workers not want to work there is a reason for jobs and payment if we don't work there will be no energy o if we give out free energy soon the workers will out want to work and later result with no energy left to give.Example a person got paid and the company gave free energy for someone you would want pay so they would give pay to you but later on they will run out of money to pay the workers because no one is paying for the energy.
An example of a soil conversion method is contour plowing.
Hope this helps :D
