For no other reason?

[Nigmatullina]

English Language Tests, Intermediate level

ESL/EFL Test #82 "Save Our Animals (2)", question 3

Cathy didn't believe any of this and was delighted to be working for Geoffrey Winton if for no other ......... than that living at home was very humdrum (boring).

(a) reason
(b) cause
(c) fact
(d) decision

English Language Tests, Intermediate level

ESL/EFL Test #82 "Save Our Animals (2)", answer 3

Cathy didn't believe any of this and was delighted to be working for Geoffrey Winton if for no other reason than that living at home was very humdrum (boring).

Correct answer: (a) reason
_________________________

уexplain please

[Torsten]

Cathy was happy that she could work for Geoffrey Winton because she didn't want stay home doing nothing.

TOEFL listening lectures: A university lecture on the history of the English language