Final answer:
Crunches are likely to target the abdominal muscles.
Step-by-step explanation:
The exercise likely to target the abdominal muscles is crunches. Crunches specifically engage the rectus abdominis muscle, which is located in the front of the abdomen. When you perform crunches, you contract this muscle by flexing the spine and curling the upper body towards the knees. This movement effectively targets and strengthens the abdominal muscles.