Q.A person's own good health is NOT classified as 'wealth' in the economic sense mainly because it fails the test of:

Wealth in economics must be external to its owner — a personal quality that cannot be separated from the person it belongs to fails this specific test even if it is useful and scarce. …

Good health clearly has utility (it helps a person work and live well) and can even be regarded as relatively scarce. What it fails is the externality test: economic wealth must be a good external to its owner — something that can, in principle, exist apart from the specific person who holds it (a house, land, a machine). Health, like skill or honesty, is inseparably bound up with the person and cannot be detached and handed over on its own — only option (c) captures this correctly. …

Picking marketability as the reason instead of externality — the two are related (an internal quality generally also cannot be independently marketed), but the syllabus spe …