When you were younger, you probably had your hearing checked. Headphones were placed over your ears and you were to respond when you heard a sound. You were being tested for your hearing:.

hearing threshold

Explanation:

Hearing threshold -

it refers to the level of sound , lower than that particular level , the person won't be able to listen to any sound , is referred to as hearing threshold.

In case of adults ,

0 dB is referred to as the reference level .

Hence , from the given scenario of the question ,

Placing the headphones over the ears of the child , the process of hearing threshold is done , in order to determine the lowest sound the child can hear , calling it to be the hearing threshold.

Hence , the correct answer is hearing threshold.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.