Answer:
d. deciding on all of the discussion rules
Step-by-step explanation:
The main function of a moderator in a debate is to ensure that the discussion develops smoothly and that it is fruitful. Grant the speaking turns and intervene in case of any conflict.
A debate is an encounter between two or more people in which a pre-established topic is discussed. The moderator is the conductor of the same one and it begins doing a brief introduction so that the guests initiate their participation, expose their ideas and present the corresponding data to reinforce them.
The moderator is a kind of neutral director of the discussion. Its role is fundamental for the development of it and for the debate to be useful as an exposition of arguments.