The correct option is B Partially
'Bluntly' is an adverb which means 'spoken/presented in an uncompromising way'
'Partially' is an adverb which means 'only in part / incompletely'
'Entirely' is an adverb which means 'completely'
'Strongly' is an adverb means 'with great power / strength'
'In toto' is an adverb which means 'as a whole'
Therefore, the word which conveys the opposite meaning to that of 'In toto' is:
B: Partially