What do scientists and engineers have in common? A. They don't need to be creative.
B. Their work always has a goal of solving a practical problem.
C. They always work in laboratories or offices.
D. They need to observe, measure, calculate, and record and interpret results.

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.