Correct option is E
Electrical appliances are typically not connected in series due to several practical reasons:
Appliances cannot be switched on separately – Turning off one switch affects the entire series circuit.
All appliances will not get the same voltage – In a series circuit, voltage is divided across components, so appliances may receive insufficient voltage.
The current from power supply will be low – Total resistance increases in series, which reduces the current.
If one appliance stops working, all others also stop working – Like old-style Christmas lights: one failed bulb breaks the entire circuit.

