Final answer:
A resident in the Fowler's position is in a semi-sitting position with the head of the bed raised, which is commonly used in medical settings for patient comfort and care.
Step-by-step explanation:
The resident in the Fowler's position is A) In a semi-sitting position. This position involves a patient being seated in a relaxed position with the head of the bed raised at an angle varying from 15 to 90 degrees. It is typically used in medical settings to assist with certain medical conditions, examinations, or procedures. The other options, such as lying flat on the back, being in a left side-lying position, or lying on the stomach, represent the supine, lateral, and prone positions, respectively, and are not related the Fowler's position.