Change of tone. You can change the tone of your voice to make the story more compelling
Giving each member of the group a specific job & as the leader is giving each member a job the leader should write down the list of names and the job each member have.
Lieutenant is not a part of the main clause, and it is an address to a person that is inserted into the sentence. It must be therefore separated by comas on both sides: the correct answer is a.