Which one of the following should be taken up as initial activity in introducing the concept of 'time' to young learners?

The most effective initial activity for introducing the concept of time is discussing prior experiences with time-related phrases (e.g., 'morning', 'evening', 'yesterday', 'before lunch'). This connects the abstract concept of time to children's everyday experiences and language, building a conceptual foundation before moving to more technical aspects like reading clocks or calculating elapsed time. This follows the constructivist approach of building on prior knowledge.