Final answer:
The fifth basic type of interview, in addition to unstructured, structured, situational, and panel interviews, is a behavioral interview.
Step-by-step explanation:
There are five basic types of interviews: unstructured, structured, situational, panel, and behavioral interviews. The unstructured interview allows for open-ended questions and free-flowing conversation, whereas the structured interview involves predefined questions and a standardized rating system for responses. Situational interviews present hypothetical situations to assess how candidates would handle them, and panel interviews involve multiple interviewers. The missing type from the options given is the behavioral interview, which focuses on past behavior as an indicator of future performance.