Answer: Paid sponsorship by a company
Step-by-step explanation:
A reliable science can be considered as the facts which can be proved and rectified by using efficient scientific experiments the data obtain from such processes are reliable and acceptable by the scientific community.
Among the options given, paid sponsorship by a company is the correct option this is because of the fact that if the company sponsors the tests which are required to prove the efficiency of the products then such results may be manipulated and unreliable.