Identify two types of simple machines in this compound machine #its a bottle opener

The answer to this question really depends on the type of bottle opener. But I think the most appropriate answer for this item would be a level because one of the ends of the bottle opener stays in the same place while the other end changes position constantly. Next is wedge, a machine with ends almost in triangular in shape. 

Ithink the answer is c i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.