Select the most appropriate option that can substitute the highlighted word in the given idiom.
At the last hour

Correct option is B

The correct substitution for the idiom "At the last hour" is "At the eleventh hour".
Correct Idiom: "At the eleventh hour": At the last possible moment, just before a deadline.
Hindi Meaning: अंतिम क्षण में
Example: The students submitted their assignments at the eleventh hour, just before the deadline.
Other related idioms:
· "Burning the midnight oil" – Working late at night.
· "A race against time" – Trying to do something very quickly before a deadline.
Meanings of the other given options:
· Half hour (आधा घंटा) – Does not fit the idiom.
· Sixth hour (छठा घंटा) – Not a commonly used phrase.
· Twelfth hour (बारहवां घंटा) – Incorrect; the standard phrase is "eleventh hour."