Answer:
A. formality
Explanation:
noun
the rigid observance of rules of convention or etiquette.
"he retained the formality of his social background"
stiffness of behavior or style.
"with disconcerting formality the brothers shook hands"
Similar:
ceremony
ceremoniousness
ritual
conventionality
red tape
protocol
decorum
stateliness
courtliness
solemnity
etiquette
aloofness
reserve
remoteness
detachment
unapproachability
stand-offishness
stiffness
primness
stuffiness
staidness
correctness
punctiliousness
inflexibility
reticence
taciturnity
antisocial nature
Opposite:
informality
a thing that is done simply to comply with requirements of etiquette, regulations, or custom.
plural noun: formalities
"legal formalities"
Explanation:
