The correct sentence is "facts and opinions are not necessarily in opposition". That is so because one can agree with a fact.
On the other hand "fact" may not be a synonym of "opinion". In research you can use "facts", "opinions" or both. It is so because one does not exclude the possibility of using the other. They are not necessarily anthonyms/ opponents. an opinion is not more important than a fact, but on the contrary, because facts can be proved easier than opinions.
Hii I’m pretty sure it’s ‘Will not be’ sorry if it’s wrong
D. All of the others do not make sense, either grammatically or logically.
Answer:
not known or recognized.
"his voice was unfamiliar to her"
synonyms:
unknown · new · strange · queer · foreign · alien · unheard of · beyond someone's ken
unusual or uncharacteristic.
"the yellow taxicab was an unfamiliar sight on these roads"
synonyms:
unusual · uncommon · unconventional · novel · different · exotic · alternative · unorthodox · odd · peculiar · curious · atypical · uncharacteristic · unwonted · abnormal · anomalous · aberrant · out of the ordinary
(unfamiliar with)
not having knowledge or experience of.
"the organization was set up to advise people who might be unfamiliar with legal procedures"
synonyms:
unacquainted with · unused to · unaccustomed to · unconversant with · unpracticed in · inexperienced in · unskilled in · unversed in · uninformed about ·