Which of the following sentences best describes the composition of a flat bone?A) A flat bone is composed of a layer of spongy bone surrounded

A

Explanation:

Flat bones are made up of a layer of spongy bone between two thin layers of compact bone. They have a flat shape, not rounded. Flat bones have marrow, but they do not have a bone marrow cavity.

A flat bone is composed of a layer of spongy bone surrounded on each side by a layer of compact bone.

Explanation:

The answer you're looking for is washing your hands. "at this late date, we all expect our doctors to wash their hands before examining us or performing an operation in order to prevent the spread of infection. surprisingly, physicians did not begin to acknowledge the lifesaving power of this simple act until 1847.it was then that dr. semmelweis began exhorting his fellow physicians at the famed vienna general hospital (allgemeines krankenhaus) to wash up before examining women about to deliver babies. his plea was far more than aesthetic; it was a matter of life and death and to prevent a deadly malady known as “childbed” or puerperal (from the latin words for child and parent) fever." 

You can write out the letter, but it should specify: the patient hasn't been controlling their diabetes bc glucose and ketones spilling into the urine. also, the positive nitrite could indicate a u.t.i. infections can cause hyperglycemia in a diabetic. also the reverse, uncontrolled blood sugar can lead to glycosuria, which is a good nidus for bacteria to grow from sugar in urine, leading to a uti.