Question

long, brown, and straight are ______ characteristics of hair.
○ a. medullary
○ b. phase - contrast
○ c. macroscopic
○ d. cortex

Explanation:

Macroscopic characteristics are visible to the naked - eye. Long, brown, and straight hair features can be seen without the aid of a microscope. Medullary refers to the medulla of hair, phase - contrast is a microscopy technique, and cortex is a part of hair structure, none of which directly describe these visible features.

Answer:

C. macroscopic