The recovery of data changes made since a given point in time is called . . . . . . . .

Answer: Option B

This question asks about how to recover data changes made in MySQL since a specific time. Let's break down the options:
Option A: decremental - This refers to reducing or decreasing something, not recovering data changes.
Option B: incremental - This means adding or increasing something in small steps. This is the most likely answer because it describes recovering data changes in a gradual, step-by-step manner.
Option C: close - This is related to closing a connection or file, not recovering data.
Option D: clear - This implies removing or deleting something, not recovering data changes.
Therefore, the correct answer is Option B: incremental.
Incremental recovery refers to recovering data changes that happened after a specific point in time. It's like taking snapshots of your data at certain intervals, and if something happens, you can restore it to a specific point in time.