Correct option is A
The correct idiom for the highlighted segment is “in a tight corner.”
Error identification: The phrase "a very difficult situation to escape from" is best replaced by the idiom "in a tight corner."
Grammatical Rule used: An idiom is a phrase that conveys a figurative meaning different from the literal meaning of the words.
Corrected sentence: Low count of sales, despite the sincere efforts of the sales executive, has put her team in a tight corner.