City dwellers and mental-health experts usually agree that it is the urban environment itself that is the chief breeding ground of emotional ill health; indeed, the viewpoint is that deeply ingrained that is axiomatica) that deeply ingrained that is axiomatic
b) deeply enough ingrained that it is an axiom
c) so deeply ingrained as to be axiomatic
d) an axiom it is so deeply ingrained
e) as deeply ingrained as if it were an axiom

OA: later