What deduction is applicable for a dismount salto if the height is deemed insufficient?

In gymnastics, when evaluating dismounts that involve a salto, judges are required to assess several components, including the height achieved during the salto. If a gymnast's dismount salto is considered to have an insufficient height, a deduction is incurred to reflect the lack of technical execution and difficulty.

The specific deduction for insufficient height is set at 0.30. This deduction is significant, as it directly impacts the gymnast's overall score by penalizing them for not executing the skill with the required amplitude. Height is a critical factor because it not only demonstrates the gymnast's power and technique, but also affects the overall presentation and landing of the dismount, which is vital in high-level gymnastics competitions.

The other deductions or options do not accurately represent the penalty assigned in this situation, as they pertain to different aspects of execution or are not applicable in this context. Therefore, the correct deduction for a dismount salto with insufficient height is indeed 0.30.