If a parent checks whether or not a child is watching tv by observing the child for a few seconds each hour on the hour throughout a day, that parent is using a( recording system.

Time- sampling

Explanation:

 The parent is basically using the time sampling recording process for observing their children. The time sampling is the process in which the children are observed by using the fixed intervals on regular bases.

The time sampling is the useful way for collecting the present data or information for long time duration.

It is basically used to collect the precise information and repeated for short duration for the development of the children.

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