<span>According to Ana Quindlen, other countries often handles deep ethical division “by separating to become new countries with a new name”. She adds that America's ethnic groups before the Cold war was the enemy of the US. Everybody together put off and fight against communism and war. </span>
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.
People will spend less time on it and not waste their lives on useless things but if we need an answer or need to search how to do something it will be way harder to