Final answer:
Three components typically included in a lesson plan are a task analysis, instructional objectives, and procedures. Assessing what students have learned is not usually a part of a lesson plan. Therefore, the correct option is D.
Step-by-step explanation:
Typically, three components are included in a lesson plan: a task analysis of the topic in question, the instructional objectives of the lesson, and the procedures to be followed during the lesson. A method of assessing what students have learned from the lesson is not usually a part of a lesson plan, as this is usually addressed separately.