Choose the incorrectly spelt word.

Correct option is B

The incorrectly spelt word is option (b) “Mortifeid”.
The correct spelling is "Mortified," which means to feel extremely embarrassed, ashamed, or humiliated.
All other options are correctly spelled and their meanings are as follows:
•  Benign- (of a disease) not harmful in effect.
•  Insecurity- uncertainty or anxiety about oneself; lack of confidence.
•  Dismay- concern and distress caused by something unexpected.