C. Butterfly brcause its a livijg thing that moves place to place, therefore giving all work done in the cells.
A conpound-complex sentence is two subordinate clause,independent clause. sentences joined with a coordinating conjunction
example: Since I had time,I went to the store,and when I returned,I out the groceries away.
The conventional rule is to take the plural form of the verb when two nouns are joined by the conjunction 'and'. However, there are exceptions. Only then can you break the rule.
When the two nouns refer to one thing only, then you can use the single form. For example: The president and the CEO joins the meeting today. In this example, the president and CEO apply to one person only. Hence, you use the singular form of the verb.
Yes it is a run on sentence