What tool can help clarify and reinforce subjects?

The answer is correct because drawings and diagrams serve as powerful visual tools that can enhance understanding and retention of complex subjects. They allow students to visualize concepts, see relationships between different pieces of information, and organize their thoughts in a more coherent manner. Visual aids can simplify intricate ideas, making them more accessible and easier to grasp. For example, in subjects like math or science, diagrams can illustrate processes or relationships that text alone may not effectively convey. By engaging multiple senses, such as sight and touch when working with drawings, learners often find it easier to retain information.

Other options, while they may have some utility, do not provide the same level of clarity and reinforcement for learning. Textbooks alone may not engage students effectively without accompanying visual elements. Blank paper, while useful for jotting down thoughts or calculations, does not inherently clarify concepts without the addition of visuals. Lectures without visual aids can limit understanding, as they rely solely on auditory learning, which may not cater to all learning styles. Overall, drawings and diagrams are particularly beneficial for enhancing comprehension in a variety of subjects.