The correct answer is: C. Either I or II is implicit
The Personnel Manager’s statement suggests that offering cash rewards will solve the problem of workers’ dissatisfaction in both companies. This suggests that the reason for workers’ dissatisfaction in both companies is similar. However, the statement does not explicitly state this, so it is only an implicit assumption.
The statement also suggests that monetary incentives have universal appeal. This means that workers in both companies will be motivated by cash rewards. However, the statement does not explicitly state this, so it is also only an implicit assumption.
Therefore, either assumption I or assumption II is implicit in the statement.