a) in the morning - This part of the day typically refers to the time from sunrise until around noon. It is when people typically wake up, have breakfast, and start their daily activities or work.

b) in the afternoon - This part of the day usually follows the morning and lasts until around sunset. People may have lunch, continue working, run errands, or engage in other activities during this time.

c) in the evening - The evening is the time after sunset until bedtime. It is when people usually have dinner, relax, spend time with family or friends, and wind down for the day.