Answer:
The characteristic that will best help her move forward is:
A. creative.
Step-by-step explanation:
Creativity can be defined as the ability to see alternative paths and solutions to a problem, as well as the ability to come up with new ideas. If Letti has a problem she does not know how to solve, being creative will help her move forward. She will be able to look at the problem from different angles and find alternative ways to keep her experiment going.