1) separate yourself in a field of candidates
2) delivering presentations
3) being the best man in a wedding or giving a eulogy
The answer is Variable
Explanation: A variable is a quantity or a number that can vary or take on different values.
The variable is normally represented as a letter, in this case this number is represented as a "A".
The result of the variable focus on the experiment or the study.
There are three types of variable: independent, dependent, and controlled.
I believe the answer is: Recidivism
Recidivism refers to The tendency for criminal to repeat the offense that made them convicted in the first place.
Many experts believe This happen because the prison system in united states do not add enough educational value for the inmates to change their behaviors/way of thinking.