Multiple Choice: blissfully vs delightedly vs jubilantly vs esctatically

[Sultano]

Serena is still ...................ignorant of the fact that she is about to be made redundant.
a) blissfully b) delightedly
c) jubilantly d) esctatically

What is the best answer and what is the difference among them.

[Yankee]

Hi Sultano

Only option (a) works. "Blissfully ignorant" is a typical collocation. You might also find "blissfully unaware" or "blissfully oblivious", for example. Those have similar meanings. To describe a state of not knowing something, we would use blissfully. (Blissfully can also be used when there is knowledge of something.) I'd say the other three options would be used only to describe the knowing of something.
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