Answer:
The correct answer is the option A: the meeting would be more effective if they were held once a week.
Step-by-step explanation:
To begin with, accordingly to the information that the manager gathered the meeting should be more effective if the employees are in good mood and also if they do good contributions to the meetings of the staff and that is why if the meeting are done every day the employee will eventually get exhausted by the continuous meeting and moreover they will not have any important aspects to make as the day passes therefore that the meeting will be better if the they were only held once a week in order to make the employees gather the major information of the week and summarize it for the meeting.