Yes ACL anterior cruciate ligament can be strengthen by this exercise:
Balance Exercises to Prevent ACL Injury
Single Toe Raises (30 reps x 2 reps)
Purpose: This exercise strengthens the calf muscle and increases balance.
Stand up with your arms at your side.
Bend the left knee up and maintain your balance.
Slowly rise up on your right toes with good balance.
Exercise To Strengthen Your ACL anterior cruciate ligament