Question

1. what describes publications with fixed intervals between issues that can be used to find sources for supporting materials?

books
periodicals
novellas
fact sheets

Explanation:

To solve this, we analyze each option:

• Books: Published as single works, no fixed issue intervals. Eliminate.
• Periodicals: Defined as publications (like magazines, journals) with fixed intervals (e.g., weekly, monthly) between issues. They are used for research/supporting materials.
• Novellas: Short novels, not published with fixed intervals. Eliminate.
• Fact sheets: Informational documents, not periodical. Eliminate.

Answer:

B. periodicals