The answers are A, C, and D.
The type of Optical Fiber that is used normally to connect two buildings that are apart by several kilometers is called the Single-Mode Optical Fiber.
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What is a Single-Mode Optical Fiber
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In the field of fiber optic communication, the single-mode optical fiber (SMF) which is also known as the fundamental or mono-mode optical fiber is one that is designed with the ability to carry and transport only a single mode of light.
Learn more about types of Optical Fibers in the link below:
brainly.com/question/8887427
Answer:
the pain associated with teeth cleaning
Explanation:
The five-year-old Claire's behavior is better classified with the Classical Conditioning theory, which is a form of learning in which a conditioned stimulus is linked with an unrelated unconditioned stimulus to produce a response that is conditioned response.
Since she was not afraid of the dentist on her first visit, because of the fact at first she wasn't aware of the pain associated with the teeth cleaning. But now, when she goes to the dentist, she becomes anxious and cries because of the pain associated with teeth cleaning. Hence, her fear was a learned behavior.
Answer:
B all of the others are either needed requirements to live, shelter, food etc. In most states car insurance is required by law.. Cable service is really considered a luxury.
