Expression: 'To make up one's mind'

[Barnardy]

English Language Tests, Intermediate level

ESL/EFL Test #711 "Real Life: Making Decisions", question 8

Sara can't make up her ......... right now. On one hand, she could make a lot of money if she goes through with the deal. However, if she does, she may lose a good friendship.

(a) mind
(b) thoughts
(c) decision
(d) consideration

English Language Tests, Intermediate level

ESL/EFL Test #711 "Real Life: Making Decisions", answer 8

Sara can't make up her mind right now. On one hand, she could make a lot of money if she goes through with the deal. However, if she does, she may lose a good friendship.

Correct answer: (a) mind
_________________________

Give me the explanation please.

Barnardy

[Mister Micawber]

.
'To make up one's mind' = to decide..
_________________
Native English teacher at Mister Micawber's