When used as a noun, this word is always plural?

Read the sentence. at the end of the day, the dusk was filled by the coyote's haunting call. which revision puts the sentence in the active voice while maintaining the meaning? at the end of the day, the coyote’s haunting call filled the dusk. at the end of the day, the coyote’s call haunted and filled the dusk. at the end of the day, the coyote’s call was haunting the dusk. at the end of the day, the coyote was calling the haunted dusk.