Final Answer:
Aila achieved a flexibility measurement of 2 units at the end of the unit (option c).
Step-by-step explanation:
At the beginning, Aila measured -2 units. Since her final measurement was four more than that, we simply add 4 to her initial score:
-2 (initial) + 4 (improvement) = 2 units (final)
Therefore, Aila's final reach on the flexibility scale was 2 units.
In conclusion, Aila successfully improved her flexibility through the physical fitness unit, demonstrating a notable increase of four units on the flexibility scale. This positive outcome highlights the importance of targeted exercise and the potential for individuals to enhance their physical abilities through dedicated practice.
Option C is answer.