I have also done this kind of project.......u have to just make an over all report like in datas
An infinitive is a verb not attached to a particular object or tense
so yes it is B
1. B --> mussels, oysters, clams, shrimp, carp and catfish is a list (series) of foods that has to be separated by a comma
2. B--> if you remove 'confine them to a pond or cage' its a normal sentence, so i think its b
