B. the masses of each object.
Volume does not matter and it's an inverse relationship to the distance squared.
I believe it is a. After the ferry ride, Marquis walked home and sat in the backyard to enjoy the pleasant weather.
In iambic pentameter, each verse consists of five metrical feet. Meter is a poem's rhythm, and feet are units of that rhythm.
In an iamb, an unstressed syllable is followed by a stressed syllable, as in the word "hello."
"Penta" means five, so a verse of iambic pentameter has five iambs.
Five pairs of unstressed syllables followed by stressed syllables.
Five pairs gives a total of ten syllables. So the answer is B, "each line contains ten syllables."
