Arrange the family generations from oldest to youngest, placing same-generation relation appropriately. (a) Grandfather (b) Brother (c) Father (d) Son (e) Grandson

Introduction / Context:
The task is to order relatives by generation. Grandfather is two generations older, father is one generation older, brother is the same generation as “self,” son is one generation younger, and grandson is two generations younger.

Given Data / Assumptions:

• “Brother” is placed alongside the self-generation.
• We order by generational distance from oldest to youngest.

Concept / Approach:
Map each relation to a generation index: grandfather (+2), father (+1), brother (0), son (−1), grandson (−2). Sort descending by index.

Step-by-Step Solution:
Grandfather (a) — oldest.Father (c) — next.Brother (b) — same generation as self.Son (d) — younger.Grandson (e) — youngest.

Verification / Alternative check:
Family trees consistently place these in precisely this generational order.

Why Other Options Are Wrong:
Any order putting grandson ahead of son or father after brother misplaces generations.

Common Pitfalls:
Forgetting that “brother” is not older or younger by generation; age can vary, but generation does not.

Final Answer:
a, c, b, d, e