You did not include options in your question, but based on the meaning of the word cryptic, your answer will be 'A HIDDEN MEANING'.
When you say that something is cryptic, it means that, that thing has a meaning that is mysterious or obscure.
From the way the word was used in the given sentence, it means that the message the teacher was passing across about the test is hidden, it was not understood by any of the students.
Of the opening sentences that were presented here that strongly engages the reader and provides context to them would be the second one which is "We could have had a worse weekend, but it's awfully hard to beat Bigfoot and bugs."
The first and third one were just not good enough because it exposes the rest of the context to the reader and lets them have the idea of what you are talking about which usually leads to the readers not choosing to continue to read, thus taking out the reader's engagement but still provides context. The last one is better than the first and third, but it spilled the beans when it mentioned the particulars as to what made the weekend bad to worse. The answer is just right. It has the impact that would hook the reader to know more about your weekend and why is Bigfoot and bugs together in your statement. The rain wasn't mentioned which would be ideal to make the story telling take a turn to much worse which would spike up the interest of the reader.
Margaret believes she has won the gold medal, but she must wait for the judges final scores
Period Pooh you already know
Okinawa was one of the largest single battles in the pacific and also the bloodiest, It would see mass use of Kamikazes, artillery and mass banzai charges, it would ultimately be one of the key arguments against an invasion of Japan.
(PS sorry if this is too lengthy)
