Answer:
a. alphabet line
Explanation:
Technical drawings are the drawings that help in communicating the designs. These designs are the designs that provide the instruction for the manufacturing of any object. The designs are made with the help of lines and line symbols. Line symbols are termed to be alphabet of lines. They help the designers to draw the designs with accuracy. Various lines are drawn that differ in terms of thickness and darkness. These variations helps the designers to mark the design accurately.
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During the growth stage of the industry life cycle, imitation the cost of production increases rapidly.
<h3>What happens during growth stage?</h3>
The growth stage serves as the stage whereby the product's sales begin to increase dramatically .
It is a stage whereby product experiences high demand, and imitation the cost of production increases rapidly.
Learn more about growth stage at
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