Question

Man is mortal. (Use ‘immortal’ instead of ‘mortal’ and don’t change the

meaning​

Answer 1

did you mean, use the word "immortal" in this sentence without changing the meaning? If yes then, the answer is

Man is not immortal.

Answer 2

$\bigstar \: \boxed{\sf{\color{red}{Man\:is\:not\:immortal.}}}$