Fill in the blank with an appropriate option. It was past the mid-hour of the night, and was quite ______ and dark.

moonless

The correct answer is moonless.

The sentence is about how it was very dark at night, and the word "moonless" means without a moon. It is the most appropriate word to fill in the blank because it conveys the meaning of the sentence.

The other options are not as appropriate.

• "Glimmer" means a faint or indistinct light. It does not make sense in the context of the sentence because the night was not just a little bit dark, it was quite dark.
• "Flasher" means someone who flashes their headlights at other drivers. It does not make sense in the context of the sentence because there were no cars around.
• "Riding" means to travel on horseback or in a vehicle. It does not make sense in the context of the sentence because the sentence is about the darkness of the night, not about riding.