Answer:
A) Combining people with extremely high and extremely low abilities helps make a balanced team.
Explanation:
Effective team represents positive results even in not so favorable situations, that is there shall be an active participation from each member of the team.
Since, all the team members are not same, the team members shall be compensating for each other, with people who are highly motivated and workaholic, people who are not so talented shall be joined so that they get to learn and feel motivated, also if they do not perform well, the results shall not be affected.
Accordingly, statement A is correct and appropriate.