1. **Stating the problem:** Identify which letter labels correspond to a major arc, a minor sector, and a major segment based on the given circle diagrams.
2. **Definitions and formulas:**
- A **major arc** is an arc longer than a semicircle (greater than 180°).
- A **minor sector** is a smaller sector of a circle, less than 180°.
- A **major segment** is the larger region bounded by a chord and the corresponding arc, larger than a semicircle.
3. **Analyzing the left circle:**
- Sector A is smaller (green), sector B is larger (blue).
- Since sector A is smaller than 180°, it is a minor sector.
4. **Analyzing the center circle:**
- Arc C is visibly larger than arc D.
- Since arc C is larger than 180°, it is a major arc.
5. **Analyzing the right circle:**
- The chord divides the circle into two segments: E (yellow) and F (pink).
- Segment E is larger than segment F, so E is the major segment.
**Final answers:**
- a) Major arc: C
- b) Minor sector: A
- c) Major segment: E
Arc Sector Segment E1E99D
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