QUESTION 1) a) Suppose, you have bought a smart watch for checking the temperature and oxygen level of your body whenever necessary. Explain the sensors and working mechanism of those sensors which can serve the above purposes. [3 Marks] b) In this smartwatch, there is a sensor which is used to track our movement and speed. There is another sensor which can measure our rotation, gravity, and angular velocity. Identify and explain those sensors. [4 Marks]