Final answer:
True, using different section-lining patterns is essential in technical drawings to visually distinguish between various materials, as seen in geological mapping and cross-sectional illustrations of materials.
Step-by-step explanation:
The correct answer to the student's question is A) True. Using different section-lining patterns is a common practice in engineering and technical drawings to distinguish between various materials.
For instance, in the context of geological mapping, the use of colors and patterns provides visual cues that indicate different rock types. A volcanic rock might be illustrated using an orangish pattern, whereas a plutonic rock could be depicted with a red pattern. Moreover, the linework used can tell you about the nature of the material, like the textures or layers. Patterns with wider and brighter bands might suggest one type of geological attribute, while those with narrower and duller bands suggest another. When interpreting cross-sections, the section-lining can also give information about the dip of contacts, which is essential to understand the geological structure accurately. The diversity in the lining patterns is crucial for correctly interpreting data graphs, cross-sections, and complex illustrations where multiple materials are present.