Answer:
The correct answer is b. an operational definition.
Explanation:
An operational definition constitutes the set of procedures that describe the activities that an observer must carry out to receive sensory impressions, which indicate the existence of a theoretical concept to a greater or lesser degree. In this sense, it tries to clearly indicate how the variables are going to be manipulated or measured and also indicates that to measure a variable, it is necessary to carry out a series of activities or procedures. It is the one that builds or adapts from others, based on the observable characteristics of the phenomenon; indicating the concrete, empirical elements or indicators of the fact to be investigated.
☁️ Answer ☁️
In the natural ecology, all kinds of natural flora and fauna grow automatically.
One of the main benefits of natural resources is the provision of energy that is used to drive machinery, vehicles and even airplanes. In fact, most of the moving objects, including sheep would not move without the energy from natural resources. Crude oil is one of the main sources of this energy.
Hope it helps.
Have a nice day!~ ￣▽￣❤️
there are 60
please mark as brainliest :)
There is no photo for the question
