What is a clade? A. a group of organisms that live in the same ecosystem
B. a group of species placed together because they descended from the same common ancestor
C. a group of organisms that share the same physical characteristics
D. a group of several common ancestors and all of their descendants

you need more balloons

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.