The total duration including one wave and one segment is the definition of which concept?

• A. Wave
• B. Segment
• C. Complex
• D. Interval

Answer: (D)

The key idea here is that an interval is the span of time between two events. If you look at a single wave and a single segment as two points marking the start and end of a continuous time span, the total duration that covers both is the interval. It’s about how long that specific portion lasts from the beginning of the wave to the end of the segment.

This fits because a wave by itself is just the oscillation, and a segment is just a portion of the waveform. A complex would imply a combination of multiple parts, and the interval specifically names the duration across a defined stretch of time that includes those parts.