Answer: Correct options are C& D.
Step-by-step explanation:
Option A is incorrect because an adjective describes a noun, not another adjective.
Option B is incorrect because while an adjective can describe speed indirectly (for example, a "fast car" or a "slow train"), the adjective is describing a noun (car, train), not speed itself.
Option E is incorrect because while an adjective can describe height indirectly (for example, a "tall building"), the adjective is describing a noun (building), not height itself.