Answer:
The sonnet is an effective way for Romeo and Juliet to speak when they first meet for two reasons. First, sonnets were often about love. Therefore, it is fitting that they would speak in a sonnet when they first meet. Second, a sonnet is a 14-line poem. When they first meet, Romeo and Juliet share a sonnet, as their lines are distributed over the 14 lines. Their words join together to form a single poem, making this the second reason it is fitting for them to speak in sonnet.