Which among the following represent an illustration of Multi-dimensional signals ?

Which among the following represent an illustration of Multi-dimensional signals ?

a. A rectangular wave with discontinuities at several points.
b. Temperature of Pune at 5 PM is about 27o C
c. Light Intensity reflected from any point
d. All of these

Correct Answer : c. Light Intensity reflected from any point

Explanation :

An example of light intensity reflection exhibit the dimensional level while rectangular wave shows continuous time signal & fixed temperature of a particular place indicates the discrete form of time signal. Therefore, the attributes governing dimensions are only highlighted in an illustration of light intensity.