13. Most of the frontliners are getting sick__________ we must do our part by staying at home.
A. although
C.for example
B. because
D. therefore

14 Proper nutrition and hydration are vital _________ people who eat a well-balanced diet tends to be healthier with stronger immune systems and lower risk of chronic illnesses and infectious diseases.
A although
B. because
C.so
D. therefore

15. Applied Research refers to the study. ________helps solve practical problems using scientific methods
A. that which
B. those
D. whose

16. Crime is any action ________ violates criminal laws established by political authority
A. that
C. which
B. those
D. whose

17. Ego refers to Freud's posited part of the self ________ represents reason and common sense.
A. like
C. which
B. that
D. who Dondin​