Question

The final lines of the poem are the fullest expression of the poet’s deepest wish: for a more peaceful world. Which underlined modifier is in the comparative degree

Answer 1

The underlined modifier that is in the comparative degree is more peaceful.
There are three degrees of adjectives:
1. positive - the "normal" form of an adjective: here, that would be final
2. comparative - higher/lower form of the positive: here, more peaceful
3. superlative - the highest/lowest form of the positive: here, fullest and deepest