Explanation:

- Pandava refers to the five brothers in the Indian epic "Mahabharata".

- Caste: Refers to a traditional and hereditary social stratification in Indian society.

- Class: Represents a social or economic grouping, usually linked to wealth or occupation.

- Clan: Denotes a group of families with a common ancestor, often seen in tribal and historical contexts.

- Lineage: Pertains to direct descent from an ancestor, often focusing on ancestry rather than group ties.

Pandava is best described as a Clan because it represents a group of brothers descended from a common parent, Pandu.

Clan is the correct answer.