Using clues from the past rick's backyard

What is the best meaning for obscure in this line from the passage? a) ancient b) dark c) royal d) unknown

Determining sentence type match each sentence with its type. i looked over my shoulder, because ! had an eerie feeling simple the child ran to greet the dog, and the teddy bear fell to the ground. compound-complex the leaf broke loose from the gnarled branch complex while the moon was full, the wolves howled and the dogs slept. compound

Can someone me answer this english question