I presume vs. I guess

[Deya]

Test No. incompl/advan-28 "Mistaken Identity", question 9

Interviewer: So you're not after the job of guardian, ..........

(a) I presume
(b) I pretend
(c) I prefer
(d) I preview

Test No. incompl/advan-28 "Mistaken Identity", answer 9

Interviewer: So you're not after the job of guardian, I presume.

Correct answer: (a) I presume

Your answer was: correct
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Is 'I presume' the same as 'I gues' or if not why?
And thank you for answering my previous questions.It was realy helpful to me.

[Alan]

Hi Deya,

Yes, it has that sense of I imagine or I think I am right in saying. You say this when you are not absolutely sure about your comment as in:

I presume you understand - suggesting that the speaker could expect an answer of yes or no.

Alan
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English as a Second Language
You can read my ESL story A day in the life of a driving instructor