How do you join three independent clauses and write a grammatically correct sentence You ate the ketchup She drank motor oil It was disaster?

Here are a few ways to join those three independent clauses into a grammatically correct sentence:

Using a semicolon and a conjunction:

* You ate the ketchup; she drank motor oil, and it was a disaster.

Using a semicolon and a conjunctive adverb:

* You ate the ketchup; she drank motor oil; consequently, it was a disaster.

Using a comma and a coordinating conjunction:

* You ate the ketchup, and she drank motor oil, so it was a disaster.

Using a colon:

* It was a disaster: you ate the ketchup, and she drank motor oil.

Using a dash:

* You ate the ketchup – she drank motor oil – it was a disaster.

The best option depends on the desired emphasis and flow of your writing.