Question

which option always requires a comma before the conjunction?
compound sentence
or
long introductory element
or
appositives
or
simple sentence

Answer 1

The option that always requires a comma before the conjunction is **compound sentence**. In a compound sentence, which consists of two independent clauses joined by a conjunction (such as "and," "but," or "or"), a comma is needed before the conjunction to properly separate the clauses.

For example:
- I wanted to go for a walk, but it started raining.

However, it's important to note that while long introductory elements and appositives may often require commas, they do not always require a comma before a conjunction as a compound sentence does. A simple sentence does not involve conjunctions or independent clauses and therefore does not require a comma before a conjunction.