the coordinating conjunctions that can be used to combine two complete sentences with a comma are for and nor because yet so is this true.

Yes.

Yes, that statement is true. Coordinating conjunctions are used to join two independent clauses (complete sentences) together. When using a coordinating conjunction to combine two complete sentences, it is generally followed by a comma.

The coordinating conjunctions that can be used to combine two complete sentences with a comma are:

1. For: indicates a reason or explanation.
Example: She studied hard, for she wanted to pass the exam.

2. And: adds one independent clause to another.
Example: He went to the store, and he bought some groceries.

3. Nor: presents a negative alternative.
Example: He neither called nor texted me.

4. But: shows a contrast or exception.
Example: She wanted to go out, but she was feeling tired.

5. Or: presents a choice or alternative.
Example: You can have cake, or you can have ice cream.

6. Yet: indicates contrast or opposition.
Example: She was exhausted, yet she kept on running.

7. So: shows a result or consequence.
Example: It rained heavily, so they decided to stay indoors.

Remember, when using a coordinating conjunction to join two complete sentences, place a comma before the coordinating conjunction.