In his famous essay titled “Andrew Marvell,” Eliot describes Marvell’s poetry as having:
“a tough reasonableness beneath the slight lyric grace.”
This exact phrasing is Eliot’s well-known characterization of Marvell’s distinctive poetic quality.
Eliot saw Marvell as a poet whose verse appears light, graceful, and lyrical on the surface, yet is underpinned by intellectual firmness, balance, and disciplined thought.
This is precisely the quality Eliot attributes to the ‘Horatian Ode’, a poem that blends political seriousness with elegant lyricism.
This essay was first published in the Times Literary Supplement in 1921 and later collected in his Selected Essays (1932), where he praised Marvell's fusion of thought and feeling, objective observation, and wit, influencing Modernist views on Metaphysical poetry and the "Unification of Sensibility".
Thus, Option 2 directly quotes Eliot’s own description.