Question

which two statements describe how ultrasound technology produces an image of a baby before it is born?
a. an image is created based on the amount of time it takes for a sound wave to return.
b. body tissues absorb high - frequency sound waves, producing an image.
c. tissues in the babys body reflect high - frequency sound waves.
d. an image is created based on the frequency of reflected x - rays.

Explanation:

Ultrasound technology uses high - frequency sound waves. The sound waves are emitted, and when they encounter different tissues (such as the baby's body tissues), they are reflected. The time it takes for the reflected sound waves to return is used to create an image. Option B is incorrect because it is the reflection (not absorption) of sound waves that is key. Option D is incorrect as it mentions X - rays (ultrasound uses sound waves, not X - rays).

Answer:

A. An image is created based on the amount of time it takes for a sound wave to return.
C. Tissues in the baby’s body reflect high - frequency sound waves.