meaning of "there was no changing her mind"

[Lost_Soul]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #91 "Advanced Vocabulary", question 6

There was no changing her mind as she was quite ......... about her decision and wouldn't consider any alternative.

(a) attractive
(b) attentive
(c) adamant
(d) adjoined

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #91 "Advanced Vocabulary", answer 6

There was no changing her mind as she was quite adamant about her decision and wouldn't consider any alternative.

Correct answer: (c) adamant

Your answer was: correct
_________________________

I dont quite understand "there was no changing her mind" ..
Does it mean "there was no way of forcing her to change her mind"

TIA

[Mister Micawber]

.
Yes, but 'forcing' or 'encouraging' or 'convincing' or 'cajoling', etc.
.
_________________
Native English teacher at Mister Micawber's