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.
        
                    
             
        
        
        
My teachers can but I do believe everyone’s is different
        
                    
             
        
        
        
Answer:
elaborate I'll be able to help then
 
        
             
        
        
        
Answer: A large number of volunteers joined to collect trash from the artist's sculpture, a great interest of society in wanting to see the sculptures.
Explanation:
Angela Pozzi is an artist who found her inspiration in the trash and in an original, artistic way she pointed out the problems of environmental pollution. The project started back in 2010 and is still relevant today. Pozzi made sculptures that look massive from debris from the sea and the beaches. For the most part, the artist depicts living creatures inhabiting the sea with sculptures, and how human activity threatens the living environment. The audience was enthusiastic about the move. Pozzi organized a workshop where volunteers bring trash so they can make their sculpture. Significant public interest was also present. Part of the itinerary came to various parts of the United States, and the attendance was enormous. Pozzi pointed out that the reactions were extremely emotional and that the setting had a high impact on people's consciousness.