Comma before and

Use a comma before 'and' when it merges two sentences into one. Do not use a comma before 'and' in a list of two. Only use a comma in a list of three or more if your region uses the serial comma.

Comma Before 'And

Don't always use a comma before “and”; here's when you do

The comma before and is optional. So, in question 39 both option B

Christina Schrunk on X: Comma before so: If you can say so that, no comma is needed before so. This is a subject I've posted about before, but it's something I use

Using a Semicolon before And

An Easy Guide to Using a Comma Before And – INK Blog

Comma Before Name ~ Rules, Examples & Practice Sheet

Does the Comma Go Before or After Quotation Marks?

When Is It Necessary To Use a Comma Before or After But?

When Should You Use a Comma Before or After But?

Comma Before While: Putting an End to the Confusion - ESLBUZZ

Do I put comma before and?

When and How to Use a Comma Before and After “But”

Comma Before or After But: Rules & Examples