Explanation:

Smart tags are a feature in Microsoft Excel that provide additional information and options based on the content of a cell. They are designed to enhance productivity and provide quick access to relevant tools and functions. However, smart tags can be automatically removed under certain circumstances.

When is a smart tag removed from a cell?

A smart tag will be removed from a cell when the data in the cell is changed or deleted. This means that if you modify the content of a cell or delete it entirely, any associated smart tags will be removed as well.

Reasoning behind the correct answer:

The correct answer to the given question is option 'C' - the data in the cell is changed or deleted. This is because smart tags are closely linked to the data in a cell, and when that data is altered or removed, the smart tag becomes irrelevant and is therefore removed.

Explanation of the other options:

Let's briefly discuss the other options and why they are not the correct answer:

a) The cell is moved: Moving a cell does not affect the data or content within it, so it does not trigger the removal of a smart tag.

b) The cell is hidden: Hiding a cell only changes its visibility, but it does not modify or delete the data within it. Therefore, hiding a cell does not result in the removal of a smart tag.

d) The formatting of the cell is changed: Changing the formatting of a cell, such as its font, color, or alignment, does not impact the data within the cell or the smart tag associated with it. Therefore, changing the formatting does not cause the removal of a smart tag.

In summary, a smart tag is removed from a cell when the data in the cell is changed or deleted. This is because smart tags are closely tied to the content of a cell, and any alterations to that content render the associated smart tag irrelevant.