identifying genetic disorders determining the parts of an atom observing distant objects in space making very accurate measurements
I gave my students this multiple choice question: DNA technology has improved greatly in the last twenty years. Which task has been made easier by the development of DNA technology?

Only one answer is correct among these 4 choices:
- identifying genetic disorders
- determining the parts of an atom
- observing distant objects in space
- making very accurate measurements

Could you tell me which one is correct?

identifying genetic disorders