Question

He is mad. He feigns madness (join without and,but,so)​

Answer 1

He is not only mad but also feigns madness

or it can be wrong

he is mad because he feigns madness

this is absolutely correct

Answer 2

Either he is mad or he feigns madness.

(Feigns means pretends) .We had to join these sentences with an appropriate conjunction or group of conjunctions.So here i have used a conditional conjunction (either or).If it helped you mark as BRAINLIEST pls.