Question

an endoscope is a fiber - optic medical instrument that emits light. doctors can insert endoscopes into hollow body parts. which property of fiber - optic strands makes them most useful in endoscopes? they can create virtual images. they are decorative and colorful. they can transmit data quickly. they are small and flexible.

Explanation:

Endoscopes need to be inserted into hollow body parts. Small and flexible fiber - optic strands can easily navigate through the body's narrow and curved passages. Creating virtual images is not their main function for insertion, being decorative is irrelevant, and quick data transmission is not the key property for insertion into the body.

Answer:

They are small and flexible.