Question

which option always requires a comma before the conjuction? a. long introductory element b. appositive c. items in a series d. compound sentences

Answer 1

The option that always requires a comma before the conjunction is **d. compound sentences**.

In a compound sentence, if you are joining two independent clauses with a conjunction (such as "and," "but," or "or"), you generally place a comma before the conjunction.

Here’s a brief explanation of the other options:
- **a. long introductory element**: A comma is typically used after a long introductory phrase, but it’s based on length or clarity rather than always being required.
- **b. appositive**: Commas are used in appositives, but they are not always required, especially in restrictive appositives.
- **c. items in a series**: A comma is used to separate items in a series, but the use of the Oxford comma (the comma before the final "and" or "or") is optional based on style.

So, option **d** is your best choice.