Answer: A) Fit the meter.
Explanation: meter is a poetic device that serves as a linguistic sound pattern for the verses, as it gives poetry a rhythmical and melodious sound. A Shakespearan sonnet is a poem with three quatrains, using a rhyme scheme of abab cdcd efef, followed by an ending couplet of two lines with a rhyme scheme of gg. From the given options, the one that expresses the reason why Shakespeare shortened some words in his sonnets, is the corresponding to option A: to fit the meter.