Step 1: Analyzing the options.
A pentagon has 5 sides.
A hexagon has 6 sides.
A heptagon has 7 sides.
A hendecagon has 11 sides.
Step 2: Identifying the pattern.
The first three shapes (Pentagon, Hexagon, Heptagon) have sides that are in consecutive order (5, 6, 7). However, a hendecagon has 11 sides, which breaks the pattern.
Step 3: Conclusion.
Therefore, the odd one out is option (D) Hendecagon, as it does not follow the consecutive side number pattern.