A. healthy
B. cheerful
C. insipid
D. appealing
morbid : characterized by an abnormal and unhealthy interest in disturbing and unpleasant subjects, especially death and disease.
healthy : in a good physical or mental condition; in good health.
cheerful : noticeably happy and optimistic.
insipid : lacking flavour; weak or tasteless.
appealing : attractive or interesting.
Antonym of morbid is cheerful
