What would be an appropriate solution to the performance problem?

Question $6$ options:

The manager needs to make it clear what the expectations of the designer are, setting a detailed goal for them. With $10$ years of experience, they should be able to learn quickly. If the designer doesn't improve in the next three months, then they should be terminated.

The designer needs to build their confidence using the software so that they are more motivated to actually use it$.$ The manager should provide the designer with more one to one training on how to use the knowledge that the first training session gave them, providing feedback along the way.

The manager needs to offer the designer a cash bonus if they learn the software and can make error free work within the next three months. Compensation is an effective motivation in most cases, and should inspire the designer to pay more attention to detail.