Classification — scriptures/epics: identify the one title that does NOT belong with the others in religious tradition.

Introduction / Context:
Religious-literature classification often groups texts by tradition. Three listed works are central to Hindu tradition (two are epics; one is a sacred philosophical discourse within an epic). One text is Islamic scripture.

Given Data / Assumptions:

• Ramayana → Hindu epic.
• Mahabharata → Hindu epic (contains the Bhagavad Gita).
• Bhagavad Gita → sacred discourse within the Mahabharata; Hindu scripture.
• Quran → central religious text of Islam.

Concept / Approach:
Group by religious tradition.

Step-by-Step Solution:
1) A, C, D → Hindu corpus.2) B → Islamic scripture.3) Therefore “Quran” is the odd one out by tradition.

Verification / Alternative check:
Cross-reference the origin of each text—their languages, canons, and cultural contexts differ sharply between B and the others.

Why Other Options Are Wrong:
They belong to the same tradition and hence form the majority group.

Common Pitfalls:
Noting that the Gita is part of Mahabharata; despite internal relation, both remain within the Hindu set, keeping B as the unique outlier.

Final Answer:
Quran