Respuesta :

"Robert seems to be ready" is the correct expression. Notice that the correct verb form (Infinitive Verb) is underlined.

What is an Infinitive Verb?

This is a verb that exists in its elementary form. Other examples of infinitive verbs are:

  • To eat
  • To play
  • To think. Notice the presence of the word "To" in front of the verb.

The full question is given as follows:

Insert the correct option:
Robert Seems _______ ready

A) to be

B) of being

C) to been

D) being

The correct answer, thus, is A.

Please see the link below for more about Infinitive Verb:
https://brainly.com/question/449147