Phrase: Well, to be honest I've had a few problems recently

[Rakhine]

English Grammar Tests, Elementary Level

ESL/EFL Test #59 "Chit Chat: On the phone", question 4

Charlie: Well, to be ......... I've had a few problems recently.

(a) open
(b) overt
(c) honest
(d) correct

English Grammar Tests, Elementary Level

ESL/EFL Test #59 "Chit Chat: On the phone", answer 4

Charlie: Well, to be honest I've had a few problems recently.

Correct answer: (c) honest
_________________________

Hi, Why is this question correct? Please, explain for me.

Rakhine

[Conchita]

'To be honest' is a set phrase meaning 'to tell you the truth' and is used to introduce an admission or confession.

[trangtra]

I do not know the differents between to be open/honest/over/correct. Please, explain for me.