Time period is a....AVector quantityBScalar quantityCNeither scalar nor vectorDNone of these

Sure, let's analyze the question step by step.

1. Understanding the Concept of Time Period:

   • The time period is the duration of time it takes for one complete cycle of a repeating event. For example, in the context of a pendulum, it is the time it takes for the pendulum to swing back and forth once.

2. Vector Quantity:

   • A vector quantity has both magnitude and direction. Examples include velocity, force, and displacement.

3. Scalar Quantity:

   • A scalar quantity has only magnitude and no direction. Examples include mass, temperature, and time.

4. Neither Scalar nor Vector:

   • This option suggests that the time period does not fit into either category of scalar or vector quantities.

5. None of These:

   • This option implies that the time period is something entirely different from the given options.

Now, let's determine which category the time period falls into:

• The time period has a magnitude (the duration of time) but no direction. Therefore, it does not meet the criteria for a vector quantity.
• Since the time period has only magnitude and no direction, it fits the definition of a scalar quantity.

Based on this analysis, the correct answer is:

B. Scalar quantity