Which of the following best explains the law of requisite variety?

Question $2$ options:

for a person to register the complexity of the environment, that person must be as complex as the environment.

for a person to correctly evaluate the environment, that person must be as complex as the environment.

for a person to understand their colleagues, that person must be as complex as those individuals.

for a person to understand human behaviour, that person must be self$-$aware.