Which describes the safest way to sit at a desk while typing on the computer?

a. keep the knees and hips at 90-degree angles and the wrists straight.

b. elevate the knees, keep the hips at a 90-degree angle, and keep the shoulders back

c. keep the monitor above the eyes and the keyboard slightly raised

d. keep the monitor at eye level and the keyboard slightly raised.

Keep the knees and hips at 90-degree angles and the wrists straight.

Explanation:

From computer ergonomics, sitting at a desk and typing can affect the back, cause discomfort and sometimes injury. To protect the back, always sit with the knee and hips positioned at 90 degree while keeping the wrist straight and also position the equipment appropriately to always suite this posture.  

b. related objects

explanation:

data is stored in related objects in an access database.

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