Why was it important for citizens to participate in the Assembly? to have a say in the creation of rules
to select leaders to run the government
to have enough people available for a fair jury
to ensure that enough people were in the army

The goal is to bring together a diverse group of people to research the chosen topics. Information is presented in order to offer a common set of facts, options are assessed, and suggestions are conveyed to the relevant authorities.

So, option C is the correct statement which is important.

The other options are incorrect as:

Thus Option C is the only reason correct because of which citizen participated in the assembly.

For more information about the participation of citizens in the assembly refer to the link:

link

it is important for citizens to participate in the assembly to have enough people available for a fair jury

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.