Concept:Bloom’s Taxonomy categorises cognitive processes. The 'application' level involves using learned concepts in new or practical situations.
Explanation:Question B asks to calculate time in Kolkata given the time in London. This requires applying knowledge of longitude and time zones.
Question D asks to classify activities into the secondary sector. This requires applying the definition of economic sectors to real examples.
Question A asks for reasons for a social trend. This tests recall and understanding.
Question C asks for differences between two types of unemployment. This tests comprehension, not application.
Thus, only questions B and D assess the application dimension.
Answer:The correct option is C (B and D).