Thinking critically about a text is an example of reading, or a set of strategies for engaging in the reading process

I believe the correct answer is critical reading.

Critical reading is the process of reading in which reader goes beyond just understanding a text, he recognizes how that text portrays the subject matter and in which way that text is unique. This process involves: carefully considering and evaluating the reading, identifying the reading's strengths and implications and identifying the reading's weaknesses and flaws.