Final answer:
The Blue section contains brittle insulators such as glass and porcelain.
Step-by-step explanation:
The section that contains brittle insulators is the Blue section. In physics, insulators are materials that do not easily conduct electricity or heat. Brittle insulators are a subset of insulators that are fragile and prone to breakage when subject to stress or force. Examples of brittle insulators include glass and porcelain. The question, 'Which section contains brittle insulators?', seems to be missing context, as it refers to sections or colors without an accompanying visual reference. Nevertheless, in the context of physics, brittle insulators are materials that do not conduct electricity and tend to break or shatter easily under stress without significant deformation. Examples of brittle insulators include ceramics, glass, and some polymers. In the absence of a diagram or additional details, a specific section cannot be identified as containing brittle insulators.