Which guidewords would appear on the same dictionary page as the word infer?

Infantryman/infinitive, induction/ineluctable, inept/infantry, infinitude/informatics

Guidewords that would appear on the same dictionary page as the word infer are Infantryman and Infinitive. This is because infantryman is the first word that was defined on that specific page and the same time another guideword is INFINITIVE and this is the word that was last defined in the same page that the word infer was seen.

The answer is:   [d]:   "a few spaces below the signature line" .