Which option always requires a comma before the conjunction?

1-items in a series
2-long introductory element **
3-compound sentence
4-appositive

Which one is it?

So Is it compound sentence??

So its long introductory element?

WHAT IS ITTTtTtTtTTt

don't be rude! just read it!!!!!!!!!!!!!

Compound sentence

Which option always requires a comma before the conjunction?(1 point)

long introductory element
long introductory element

compound sentence
compound sentence

appositive
appositive

items in a series

Thank chu

it’s items in a series <3

@no bro it literally takes 5 seconds to read, are you that illiterate

she really thinks we’re gonna read that whole thing lol