The correct answer is B. An ordered pattern of rhythm
Step-by-step explanation:
In poetry, the meter is related to specific patterns that provide rhythm to verses. These patterns are based on the combination of syllables, especially in terms of the number of syllables in each verse and whether these are stressed or unstressed. For example, by combining an unstressed syllable with a stressed one you can create (iambs) which are believed to provide a da-Dum rhythm in verses. According to this, the meter can be defined as "an ordered pattern of rhythm".