Read the incomplete line of poetry, and complete the line using iambic pentameter.
the frost
a) sometimes colors the world white
b) descends and all the world is white
c) transforms a world in a single morning
d) often alters my view of the world

The correct answer is B.

In order to complete the line using iambic pentameter the world following "frost" has to begin with an unstressed syllable and be followed by a stressed one, like the word "descent."

From then on, the rest of the syllables should follow the same unstressed-stressed pattern.

The line that completes the sentence using iambic pentameter is "descends and all the world is white."

Explanation:

Iambic pentameter is made of five iambs, this is ten syllables where there is an unstressed syllable followed by a stressed syllable, then the complete sentence is pronounced like "The FROST desCENDS and ALL the WORLD is WHITE", the other options do not follow the stress pattern or the number of syllables.