Answer:
All personnel decisions must be made on C. objective criteria.
Step-by-step explanation:
Within any company or organization, all decisions regarding the personnel should be made under objective criteria so as to give every employee a fair stand.
Let's see why the other options are unjust:
- Subjective preferences: this means someone might be getting favored or unfavored in account of what the individual carrying out the decision, thus this is not a fair option.
- Sexual preferences: again, the person might get favored or unfavored based on a sexual preference which is unfair once again.
- National origin: it should not be taken into account when carrying out decisions for the personnel.