'Masterful' and 'Masterly'

'Masterful' describes someone who is powerful, domineering, or imperious — exercising control over others. 'Masterly', on the other hand, describes something performed with great skill or expertise, like a masterly performance or masterly stroke. Thus option (d) — 'Masterful means imperious and masterly means highly skilful' — accurately captures the distinction between the two adjectives.