Meaning: 'Public' refers to the general population or community, especially in the context of their opinions or views.

Wrong options:

• style: 'Style' is a noun that refers to a particular manner or approach, which does not fit as it does not relate to opinions.
• audience: 'Audience' refers to a group of people who watch or listen to something, but it does not specifically denote opinions.
• prepare: 'Prepare' is a verb that means to make ready, which does not fit as it does not refer to opinions.
• record: 'Record' is a verb that means to document or capture, which does not relate to the concept of opinion.
• knowledge: 'Knowledge' is a noun that refers to information or understanding, which does not fit the context of public opinion.

Correct answer: style

Explanation: The term 'style' is a noun that describes the manner in which something is done. In this context, it refers to the specific approach of conducting interviews, which is appropriate and fits grammatically and contextually.

Meaning: 'Style' refers to a particular way of doing something, in this case, the method of interviewing.

Wrong options:

• public: 'Public' is a noun that refers to the general population, which does not fit as it does not describe the manner of interviewing.
• audience: 'Audience' refers to a group of people who receive information, but it does not describe the method of interviewing.
• prepare: 'Prepare' is a verb that means to make ready, which does not fit as it does not describe a style.
• record: 'Record' is a verb that means to document, which does not relate to the concept of style in interviewing.
• knowledge: 'Knowledge' is a noun that refers to information or understanding, which does not fit the context of describing an interview style.

Correct answer: prepare

Explanation: The verb 'prepare' fits grammatically as it indicates the action of getting ready for something. In this context, it suggests that journalists do not need to get ready extensively for vox pops, which aligns with the overall meaning of the sentence.

Meaning: 'Prepare' means to make something ready for use or consideration, in this case, the preparation needed for interviews.

Wrong options:

• public: 'Public' is a noun that does not fit as it does not indicate an action related to getting ready.
• style: 'Style' is a noun that refers to a manner of doing something, which does not fit as it does not indicate preparation.
• record: 'Record' is a verb that means to document, which does not relate to the preparation needed for interviews.
• knowledge: 'Knowledge' is a noun that refers to information, which does not fit as it does not indicate an action of preparation.
• topic: 'Topic' is a noun that refers to the subject of discussion, which does not fit as it does not indicate preparation.

Correct answer: topic

Explanation: The word 'topic' is a noun that refers to the subject matter being discussed or questioned. It fits grammatically and contextually as it indicates what journalists need to research before conducting interviews.

Meaning: 'Topic' refers to the subject or matter that is being addressed or discussed.

Wrong options:

• public: 'Public' is a noun that refers to the general population, which does not fit as it does not indicate a subject for research.
• style: 'Style' is a noun that refers to a manner of doing something, which does not fit as it does not indicate a subject of inquiry.
• prepare: 'Prepare' is a verb that means to make ready, which does not fit as it does not refer to a subject.
• knowledge: 'Knowledge' is a noun that refers to information or understanding, which does not fit as it does not indicate a specific subject.
• audience: 'Audience' refers to a group of people who receive information, which does not fit as it does not indicate a subject for research.