Answer :
Answer:
probably C
Explanation:
Reason being is because she going to walk 3 times per week instead of 1.
For improving the intensity, the correct option is considered to be option A) walking at 3.5 miles per hour.
Suggestion taken:
Since Karina walks outside two times per week for 35 minutes at a speed of 3.0 miles per hour.
So here for improving out the intensity
She have to walk at 3.5 miles per hour
Therefore, the option a is correct.
Learn more about speed here: https://brainly.com/question/14628211