Question

question 77
customer complaints can affect a salesperson by
○ causing her/him to lose commission.
○ disappointing her/his friends and family.
○ helping her/him to earn a raise.
○ making her/his day better.

Explanation:

Customer complaints often relate to service/product issues. For a salesperson (the "salesperson" implied), unresolved complaints can lead to lost sales or refunds, which directly reduce commission earnings. The other options (disappointing friends/family, earning a raise, better day) are not logical consequences of customer complaints for a salesperson.

Answer:

Causing her/him to lose commission.