Meaning: 'Of' is used to show belonging or connection, indicating that the job pertains to the doctor.

Wrong options:

• on: The preposition 'on' suggests a surface or topic, which does not fit the context of describing a job's association.
• and: The conjunction 'and' connects two items but does not indicate possession, making it grammatically incorrect in this context.
• a: The article 'a' does not fit as it does not convey the relationship between the job and the doctor.

Correct answer: medicine

Explanation: The noun 'medicine' fits grammatically as it is the subject of what the people need to know, aligning with the context of healthcare professionals' knowledge requirements.

Meaning: 'Medicine' refers to the science or practice of diagnosing, treating, and preventing illness, which is essential knowledge for doctors.

Wrong options:

• work: The noun 'work' is too vague and does not specifically relate to the medical field, making it contextually inappropriate.
• bringing: The gerund 'bringing' does not fit grammatically as it does not serve as a noun that can be known, thus lacking relevance in this context.
• balance: The noun 'balance' does not pertain to the knowledge required for doctors, making it an incorrect choice.

Correct answer: able

Explanation: The adjective 'able' correctly describes the capability of the people running hospitals, fitting grammatically and contextually as it indicates their ability to perform tasks.

Meaning: 'Able' means having the power, skill, means, or opportunity to do something, which is essential for the responsibilities mentioned.

Wrong options:

• capable: While 'capable' is similar, it does not fit as well in this context, as 'able' is more commonly used in this construction.
• ready: The adjective 'ready' implies preparedness but does not convey the same meaning of capability as 'able' does in this context.
• agreeable: The adjective 'agreeable' suggests a willingness to accept, which does not relate to the ability to perform tasks, making it contextually irrelevant.

Correct answer: staff

Explanation: The noun 'staff' appropriately refers to the group of people working in a hospital or practice, fitting grammatically and contextually as it denotes the workforce involved.

Meaning: 'Staff' refers to the employees or personnel of an organization, which is relevant in the context of managing a healthcare facility.

Wrong options:

• people: The noun 'people' is too broad and does not specifically refer to the workforce in a professional setting, making it less precise.
• folks: The term 'folks' is informal and does not match the formal tone of the text, making it inappropriate in this context.
• friends: The noun 'friends' implies a personal relationship rather than a professional one, which does not fit the context of a workplace.