I believe the answer is B. Noun. Since you're describing something.
Wordiness
The word "sometimes" eliminates the need for "every now and then," making the sentence wordy.
The theme of the oval portrait is Fatal love, the wife in the story loves an artist but he loves his art. so by the time he was done it happened that she had died by his side.
Different- mount olympus is in nyc at the top of the empire state building (an actual place in the human world) & above the world (very top floor that does not really exists to humans); underworld is a place that non humans never see/know of & it's under the world
her bestselling series goes by the name the mortal instruments.
