Astraight line over a vowel to show it has a long sound a: breve b: accent c: macron

The answer is: C: macron.

Macron refers to the straight line placed over a vowel to give it a longer sound in Latin and Greek languages. For example, ā.

Breve is a short diacritic mark in the shape of the bottom of a half circle. It indicates the vowel is short, such as ă. Likewise, a diacritical mark or accent is used to stress vowels; for example, á.

explanation:

the silver bells of the sleds are merry and keep time in the winter nights while the sky twinkles happily. the golden bells of weddings are delightful in their peaceful happiness, foretelling a rapturous future. meanwhile, the brazen alarm bells scream frightfully in the night, with a discordant and desperate sound. in their clamor, these bells convey terror, horror, and anger. finally, the iron bells are solemn and melancholy, while those in the church steeple are like ghouls who feel happiness. the king of the ghouls, who rings the bells, cheerfully keeps time with the moaning and groaning bells.