The principle which allowed Marta to find her dog Roxy is known as an: d. absolute threshold.
<h3>What is an
absolute threshold?</h3>
An absolute threshold can be defined as the smallest (lowest) level of stimulus such as light, touch, sound, etc., that can be detected by a living organism, usually half the time.
In this scenario, a principle which allowed Marta to find her dog Roxy amid all of the other barking dogs is known as an absolute threshold.
Read more on absolute threshold here: brainly.com/question/15301528
#SPJ1
The answer is the letter B. Amount of restriction measured in inches of water. <span>The restriction measuring devices are used to extend the filter's useful life, that is, they maximize the filter's useful life, which significantly reduces maintenance costs.</span>
Answer: Pen or Cuttlebone
Explanation: