The answer would be: A. Absolute method
The absolute method is done, normally, carrying out by calculating the maximum amount of recital that you and your brother could do over an allotted amount of time. For example, in about 1 minute, the person with the alternative recital is more likely the one with more muscle endurance.
That's not true. Some people get anxiety or depression when stressed, some people get physically sick when stressed, some people get angry or emotional when stressed. Everyone reacts differently when it comes to stress.