Option C is correct because the suffix -ly changes the noun to an adjective attributing the meaning 'the qualities of'. In the phrase "kingly presence" the adjective 'kingly' modifies the noun 'presence'. The adjective 'kinged' is archaic, it isn't used in Standard English or modern-day English, hence option D is incorrect. The words 'kingful' and 'kingish' do not exist in the dictionary, they're not used in Standard English hence options A and B are incorrect.