Question

reread the sentences from the passage. this leg was specifically designed for rock climbing and has many features that can help the climber, such as the spiked foot, which grips the rock face better than any biological foot could. other prosthetics can help people excel at the sports they love, too. engineer hugh herr has made this his life’s work. what does the word this refer to? engineer hugh herr has made?

Explanation:

The previous sentences discuss how prosthetics (like the rock - climbing leg) can help people excel in sports. "This" in the last sentence refers to the development of prosthetics that aid people in sports.

Answer:

Developing prosthetics that help people excel in sports.