What one is correct?
Albinism
Albinism in plants is a genetic disorder, results in partial or complete loss of chlorophyll pigments and incomplete differentiation of chloroplast membranes. Plants will not be able to survive without chlorophyll and photosynthesis. It is irreversible.
Etiolation
Etiolation in plants is a physiological adaptation of flowers to grow in the dark or insufficient light. It is a reversible process. It results in small and pale yellow leaves.
Final answer
a. Albinism is genetic and etiolation is physiological.