Concept:A pause within a line of poetry is known as a caesura.Explanation:Alliteration is the repetition of initial consonant sounds, not a pause.Metre refers to the rhythmic pattern of stressed and unstressed syllables.Assonance is the repetition of vowel sounds in nearby words.A caesura is a deliberate pause or break inside a single line of verse.Therefore, the correct literary term for this device is caesura.Answer:B. a caesura