I agree it needs to be from your own mind and thoughts. You can look up interview question answer helpers.
Answer:
Given the current state of the world environmentally, the world is going to be a much warmer place. Also, many languages today might not be used in about 100 years. Technology will definitely advance during that time making us reliant on it. With evolution, some species are expected to be extinct by the time 100 years rolls around. Humans will be more knowlegable overall thanks to better education and easier access to the internet. Public transportation might be improved due to more people living in the planet and there's a chance for that number to reach about 10 billion people.
Explanation:
Answered the question based on the information given.
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.