Coal is the answer uranium and petrolium are products
Answer:
B. A company that makes pain relief medication tests the effectiveness of their own medicine compared to that of three other brands.
Explanation:
In experimental bias the researcher is more likely to attempt to manipulate or produce results that show their work in a positive outcome. In this case, the company is aiming to perform research on their product that goes against their competitors.
UwU
Rosalind Franklin was who discovered the structure of dna twisted like a rope
