Correct option is B
Option
(b) is the correct meaning of the idiom.
Idiom: "By the skin of one’s teeth"
Meaning: To barely manage to escape or succeed—
just in time, with little margin.
Example: I passed the exam
by the skin of my teeth—I got the last passing mark!
Other related idioms:
· "Close call" – a narrow escape
· "Touch and go" – outcome was uncertain until the last moment