Passage
A tertiary alcohol H upon acid catalysed dehydration gives a product I. Ozonolysis of I leads to compounds J and K. Compound J upon reaction with KOH gives benzyl alcohol and a compound L, where K on reaction with KOH gives only M.
The structures of compounds J,K and L respectively, are
(a) PhCOCH3, PhCH2COCH3 and PhCH2COO-K+
(b) PhCHO, PhCH2CHO and PhCH2COO-K+
(c) PhCOCH3, PhCH2CHO and CH3COO-K+
(d) PhCHO, PhCOCH3 and PhCOO-K+
