A language teacher gives his learners a detective story without an ending, Learners are asked to solve the mystery given in the story and to suggest the ending. This task will help to assess the language learning of learners at :

Correct option is C

Asking learners to solve a mystery in a detective story and suggest an ending assesses language learning at the 'higher order thinking skill level'. This task requires creativity, critical thinking, problem-solving, and synthesis of information, which are all higher-order cognitive skills. Such activities challenge students to go beyond mere comprehension and apply their understanding in innovative and analytical ways.