meaning of plausible

[Edita]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #88 "Verbal Advantage", question 6

Although her boss knew that she was not telling the truth, her explanations for being late were always so reasonable and totally ......... that he believed her.

(a) pleasant
(b) perceptive
(c) penetrating
(d) plausible

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #88 "Verbal Advantage", answer 6

Although her boss knew that she was not telling the truth, her explanations for being late were always so reasonable and totally plausible that he believed her.

Correct answer: (d) plausible

Your answer was: incorrect
Although her boss knew that she was not telling the truth, her explanations for being late were always so reasonable and totally perceptive that he believed her.
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what actually mean plausible?

Edita

[Lost_Soul]

[Ahmadov]

I first met the word "plausible" in a chess article. A player thought that one particular move was plausible, i.e. it could be considered correct and winning. However, later on that player lost because the move failed him. So, I have an impression that "plausible" means something that seems "correct" or "reliable" but in fact it is not... I might be wrong though...
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