Observation May Be Used in Combination with Interviewing

question 175

True/False

Observation may be used in combination with interviewing.

---

Definitions:

Natural Gas

is a fossil fuel consisting primarily of methane and other hydrocarbons, used as a source of energy for heating, cooking, and electricity generation, as well as a feedstock for chemical manufacture.

Oil Fuel

is a type of fuel derived from the refinement of crude oil used primarily for heating, transportation, and generating electricity.

Refined Product

A substance that has been processed and purified from its raw state to enhance its utility or value.

Coal

A combustible black or brownish-black sedimentary rock made largely of carbon and hydrocarbons, used as a fossil fuel for producing energy.