ICT is used to control and monitor everyday activities. Which of the following activities are most likely to use sensors?

A) Designing a master slide for presentation

B) Activating a burglar alarm.

C) Opening automatic doors

D) Creating a spreadsheet

Choose the correct answer from the options given below:

The correct answer is B and C only.

Let us analyze the role of sensors in each of the given activities to understand why this option is correct:

• A) Designing a master slide for presentation: This is a manual software design task performed by a user using a computer keyboard and mouse. It does not involve gathering physical data from the environment, so it does not use sensors.
• B) Activating a burglar alarm: Burglar alarms rely heavily on sensors (such as passive infrared motion sensors, glass-break sensors, or door/window magnetic contact sensors) to detect unauthorized entry or movement. Therefore, this activity uses sensors.
• C) Opening automatic doors: Automatic doors use motion sensors or pressure sensors to detect the approach of a person and trigger the door to open. Therefore, this activity uses sensors.
• D) Creating a spreadsheet: Like designing a presentation slide, this is a software-based data entry and organization task that requires human input via input devices (keyboard/mouse) rather than automated physical sensors.

Since only activities B and C involve the use of physical sensors to monitor and control the activities, the correct option is B and C only.