To determine the measure of the original angle \( \angle CAB \), we need to consider the information provided.
Fernanda constructed \( \angle CAB \) and then constructed a copy of it, labeled \( \angle LFDE \). If she measures \( \angle LFDE \) to be \( 59° \), this means that the measure of \( \angle LFDE \) is equal to the measure of \( \angle CAB \) because \( \angle LFDE \) is a copy of \( \angle CAB \).
Therefore, the measure of \( \angle CAB \) is also \( 59° \).
The correct answer is:
- The measure of \( \angle CAB \) is \( 59° \).