What is the lowest level of cognitive objectives in Bloom's Taxonomy?

The lowest level of cognitive objectives in Bloom's Taxonomy is Knowledge. This foundational level focuses on the recall of facts, basic concepts, and information. It is primarily about remembering or recognizing what has been learned. At this stage, learners are expected to retrieve previously learned material, such as definitions, facts, or lists, and demonstrate understanding by accurately recalling information without necessarily interpreting or analyzing it. This fundamental skill serves as the building block for higher levels of learning, where students will begin to comprehend, apply, analyze, and evaluate knowledge.

In the context of Bloom's Taxonomy, subsequent levels such as Comprehension, Application, and Evaluation each build upon the knowledge learned at this initial step, demonstrating an increasing complexity and depth of understanding.