 <translate> Answer A is impossible because the invers of 1/x is x, and the only way to have something other than a natural number is to input something other than a natural number. With the specification that only natural numbers may be used 1/7 is not a possibility for f(f(x)) The final answer: (A). <yor> Ìdáhùn A kò lè ṣeé ṣe nítorí pé ìyípadà ti 1/x jẹ x, àti ọ̀nà kan ṣoṣo láti ní nǹkan míì ju iye tó jẹ́ ti àbínibí ni láti tẹ nǹkan míì tí kì í ṣe iye tó jẹ́ ti àbínibí. Pẹlu alaye pe awọn nọmba adayeba nikan ni a le lo 1/7 kii ṣe iṣeeṣe fun f (((f ((x)) Idahun ikẹhin: (A). 