Which of the following represents learning as a six-level hierarchy in the cognitive domain?

Bloom's Taxonomy represents learning as a six-level hierarchy in the cognitive domain.

The SOLO Taxonomy classifies understanding by structural complexity, not six fixed cognitive levels.

Bigg's Taxonomy refers to the SOLO framework by John Biggs, not a six-level cognitive ladder.

Gagne's Taxonomy lists types and conditions of learning, not a cognitive hierarchy.

Bloom's six levels run knowledge, comprehension, application, analysis, synthesis, evaluation.

Anderson and Krathwohl revised it in 2001, topping it with creating.