Answer:
In summary:
- Interviews: Periodicals
- Letters from customers: Not typically found on discussion boards
- Periodicals: Magazines, newspapers, and journals
- Discussion boards: Not typically a direct source for letters from customers
Step-by-step explanation:
To match each description to the correct research source, we need to understand the nature of each source:
1. Interviews: Interviews involve direct conversations with individuals who possess knowledge or expertise in a particular subject. These can be conducted in person, over the phone, or through video conferencing.
2. Letters from customers: Letters from customers refer to written correspondence received from individuals who have used a product or service. These letters often contain feedback, testimonials, or complaints.
3. Periodicals: Periodicals are publications that are released at regular intervals, such as magazines, newspapers, or journals. They cover a wide range of topics and provide current information and analysis.
4. Discussion boards: Discussion boards are online platforms where users can engage in conversations and share information on specific topics. These platforms allow individuals to ask questions, seek advice, and exchange ideas with others.
Based on these descriptions, we can match each source to its corresponding description:
- Interviews: Periodicals can be a valuable source for interviews as they often feature interviews with experts or individuals relevant to a particular field or topic. Magazines and newspapers frequently conduct interviews with notable figures in various industries.
- Letters from customers: Discussion boards are not typically a direct source for letters from customers. However, they can indirectly provide insights into customer experiences through user-generated content and discussions about products or services.
- Periodicals: As mentioned earlier, periodicals include magazines, newspapers, and journals that publish articles on various subjects. They are an excellent source for up-to-date information and expert opinions.
- Discussion boards: Letters from customers are not commonly found on discussion boards. Instead, they are more likely to be obtained through direct communication channels between customers and businesses (e.g., email, customer support systems).