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:T5b9,• The one-word substitute of "Composed of persons, constituents, or elements from all or many parts of the world" is Cosmopolitan.

• Cosmopolitan (as an adjective)
English Meaning: having worldwide rather than limited or provincial scope or bearing/found in most parts of the world and under varied ecological conditions.

• Cosmopolitan (as a noun)
English Meaning: a cocktail made of vodka, orange-flavoured liqueur, lime juice, and cranberry juice.
Bangla Meaning: বিশ্বের সব বা বহু অঞ্চল থেকে আগত।

অপশন আলোচনা:
→ Fratricide: one that murders or kills his or her own brother or sister or an individual.
Bangla Meaning: ভ্রাতৃহন্তা; ভগ্নিহন্তা; ভ্রাতৃহত্যা বা ভগ্নিহত্যা।

→ Altruistic: having or showing an unselfish concern for the welfare of others.
Bangla Meaning: পরার্থসম্মত; স্বার্থহীন।

→ Aristocrat: one believed to be superior of its kind.
Bangla Meaning: অভিজাত লোক; উঁচু বংশোদ্ভূত ব্যক্তি।

Source:
1. merriam-webster.
2. Accessible Dictionary by Bangla Academy.