The correct option is A Extrinsic
Antonyms are words which have opposite meaning in comparison to the other. Option A)Extrinsic is correct as it means not part of the essential nature of someone or something; coming or operating from outside whereas intrinsic means belonging naturally; essential. Both the words are opposite to each other. The other options are wrong as soft, legible, and audible mean easy to mould, cut, compress, or fold; not hard or firm to the touch, (of handwriting or print) clear enough to read, and able to be heard respectively. The correct answer is A)Extrinsic.