Could someone briefly answer part a please 15 points

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

Need this asap what would be some of the drawbacks of using a specific dramatic structure such as freytag's pyramid?

Which sentence has the correct subject-verb agreement? most storms occurs at this time of year due to weather patterns. most storms occur at this time of year due to weather patterns.