What is the consequence of receiving aid from a coach upon landing during a Level 5 vault?

When a gymnast receives aid from a coach upon landing during a Level 5 vault, the consequence is a deduction of 0.50 points. This is in line with the guidelines for vault judging, which recognize that receiving assistance violates the expectation for the gymnast to complete the landing independently. The primary goal is to assess the gymnast's ability to perform the skill without external support, and any assistance during the landing indicates a failure to achieve that standard.

While the rest of the choices reflect various levels of deductions or the possibility of a routine being considered void, the 0.50 deduction specifically accounts for minor assistance that does not completely invalidate the performance. If a coach had to step in and physically support or control the gymnast's landing significantly, then a more substantial deduction or even a voiding of the score could be warranted. However, in this case, the response accurately captures the situation where assistance is acknowledged but does not completely negate the gymnast's performance.