Since a speculation does not have firm evidence, it is a hypothesize.
So the final answer is:-
C. Hypothesize
I’m pretty sure A. not positive but pretty sure
Happiness comes now and then,
Were not sure when,
But when its here enjoy every minute of it,
Because happiness has so much power,
It brings joy to everyone,
What peace of mind happiness can show,
Forget the troubles of the past.
Never fear that it will go for it could always grow
and tomorrow there it will be,
For happiness can set you free!
Could you provide the sentance that the question is talking about? You could youse dictionary.com to look it up and see if any of the definitions it gives you corresponds to the way the word is used
