What is one purpose of the link title attribute when adding URLs in the block-based editor?

What is one purpose of the link title attribute when adding URLs in the block-based editor?
A . It displays the link title in the reporting.
B. It creates a call to action (CTA) with this text on it.
C. It enables link tracking.
D. It is a tooltip and appears when the recipient hovers over the link.

Answer: D