Question

2) Where as if you have to speak even one single word. (Underlined the infinitive)​

Answer 1

PLEASE MARK ME AS BRAINLIEST

THANK YOU

Answer 2

to speak

The infinitive in the sentence Whereas if you have to speak even one single word is 'to speak'.

An infinite is the form of the verb at its most basic i.e. does not have any suffixes typically associated with tense forms like '-es' and '-ing'.

Infinitive clauses are always preceded with the preposition to right before the verb in the sentence.