Answer: Option 'B' is correct.
Step-by-step explanation:
Since we know that
Discrete variables are those variables in which values are distinct and countable.
Continuous variables are those variables in which values are in continuous interval or time interval.
Since the time takes for a light bulb to burn out take few minutes or several hours or days.
So, it is considered as "continuous variable".
Hence, Option 'B' is correct.
