--------an ergonomic principle that ties the size of a target and its contextual proximity to ease of use

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• The time to acquire a target is a function of the distance to and size of the target
• The time to acquire a target is a function of the distance to and size of the target,
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• is affected by both the size of the object and its distance from the eye
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• Which of the following is not a design principle that allow the user to maintain control?