Question

how is life science useful? it helps people recover from injuries. it helps us build more efficient engines. it helps us design artificial materials. all of these are correct.

Explanation:

Life - science encompasses biology and related fields. It focuses on living organisms and life - processes. Medical knowledge from life - science helps in injury recovery. Engineering and material design can also draw inspiration from biological principles, but the direct link to life - science is mainly in injury recovery.

Answer:

It helps people recover from injuries.