The answer is Field research
Answer:
C. Generalization
Explanation:
The relationship between subclass and superclass is generalization. For example there will be generalization between the class Employee and class HourlyEmployee which inherits from it. All the other options are not suitable.
Answer:
If your pH meter does not work, there are other ways to find out the pH, the popular one being litmus paper or indicator paper, which changes color based on the acidic or basic -ness of the object being tested.
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Answer: Heat map
Explanation:
heat map uses colouring technique with different ranges of colour. This colours differs from with the associated network signal strength of that area.So when an technician completes a survey later he can know which area has a better signal strength and areas having poor network strength from the heat map.