The idiom 'Hit the nail on the head' refers to -

• Hit the nail on the head:
English Meaning: To describe exactly what is causing a situation or problem.
Bengali meaning: মূল সমস্যাটি চিহ্নিত করা; আসল কথায় আসা।

Example: "When she said we need more time to complete the project, she hit the nail on the head."

• অন্য অপশনগুলোর মধ্যে - 
• Add fuel to the fire / flames
English Meaning: To make an argument or bad situation worse.
Bangla Meaning: বাজে পরিস্থিতি আরও ঘোলাটে করা (আগুনে ঘি ঢালা)।

• Avail of
English Meaning: Use or take advantage of an opportunity or available resource.
Bangla Meaning: কাজে লাগানো / সুযোগের সদ্ব্যবহার করা।

• Be (dead) set against something
English Meaning: to be determined not to do something / strongly opposed to.
Bangla Meaning: ঘোর বিরোধী।

Source:
1. BCS Admission Lecture, 
2. Cambridge Dictionary.
3. Accessible Dictionary by Bangla Academy.