Final answer:
The total distance Ali ran last week is 41.49 kilometers.
Step-by-step explanation:
To find the total distance Ali ran, you need to add up the distances she ran last week. The distances are 7.59 km, 16 km, and 17.9 km. By adding these distances together, you get a total of 41.49 km. Therefore, the correct answer is D. 41.49 kilometers