question 5 points 1 sonar is a type of ____________. active sensor passive sensor robot soil kit

Brief Explanations:

Sonar emits sound waves and then detects the reflected waves. Active sensors emit energy and measure the energy that is reflected back. Passive sensors only detect existing energy without emitting any. Sonar is an active sensor. Robots and soil kits are not what sonar is categorized as.

Answer:

A. active sensor