C  average speed is used, which is total distance divided by total time.
Explanation:
From the analogy presented, we know that because the speed at which an object travels varies over time, the average speed is used. 
The average speed is is the total distance traveled divided by the total time taken. 
The average speed appropriately reflects changes in rate of speed with time. 
It accounts for moments where a car slows and speeds up. 
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It's crucial for an engineer who is just beginning to design multi-story buildings to go logically through each stage of the design process. Below are six steps that make up this sequence. 
Basic guidelines to design a multi-story building
Each stage includes general guidelines to assist the designer in rapidly and effectively coming up with a workable solution for a specific set of limitations. In order for the end result to be both logical and attractive, the designer must also understand some general principles of excellent design.
The stages of a building project are presented.
Defining a project: What it is, why it is being proposed, where it is, etc.
Putting the facts together and creating the brief - Recognizing the location and context.
Designing a scheme involves considering and creating choices and a thorough design of the numerous parts and pieces.
Drawings and specifications for construction information
Construction.
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