14:I[5014,["/_next/static/chunks/11d1gk4m2o846.js","/_next/static/chunks/14mrh2-p_w84d.js","/_next/static/chunks/40y9lkvta2o_p.js"],"default"] 15:I[38392,["/_next/static/chunks/11d1gk4m2o846.js","/_next/static/chunks/14mrh2-p_w84d.js","/_next/static/chunks/40y9lkvta2o_p.js"],"PracticeCard"] 17:I[70570,["/_next/static/chunks/11d1gk4m2o846.js","/_next/static/chunks/14mrh2-p_w84d.js","/_next/static/chunks/40y9lkvta2o_p.js"],"ExamAppearanceBadge"] 16:T58a,

Correct answer: Nadir.

• Climax (noun)
- English meaning: a: the highest point: culmination.
b: the point of highest dramatic tension or a major turning point in the action (as of a play).
- Bangla meaning: কাহিনি নাটক প্রভৃতির গুরুত্বক্রমের শেষ ধাপ; চরম পরিণতি।

• Nadir (noun)
- English meaning: the lowest point.
- Bangla meaning: অধোবিন্দু; (লাক্ষণিক) নিম্নতম বা দুর্বলতম বিন্দু।

Other options:
ক) Peak
- English meaning: the highest, strongest, or best point, value, or level of skill.
- Bangla meaning: সরু চূড়া; শিখর।

খ) Apex
- English meaning: the highest point or top of a shape or object.
- Bangla meaning: উচ্চতম বিন্দু; শীর্ষবিন্দু।

গ) Zenith
- English meaning: culminating point: acme.
- Bangla meaning: মাথার উপরে সোজাসুজি আকাশের অংশ; খমধ্য; সুবিন্দু।

Source:
1. Accessible Dictionary by Bangla Academy.
2. Merriam-Webster Dictionary.
3. Cambridge Dictionary.