Abhijeet007 Plane symmetry refers to the symmetry of a pattern in the Euclidean plane,
that is a transformation of the plane that carries any directional lines and preserves different distances.
Meaning : Plane symmetry refers to a symmetry of a pattern in EP
in this pattern there is a tansfrmation of the plane that (transformation) does 2 things:
1. carry
2. preserve
Please note that "in Eucladian plane" is a modifier modifying the noun "pattern" ..so the additional info provided in the undrlined portion talks about the pattern IN THE EP and not EP itself !!
A).
that is a transformation of the plane that carries any directional lines
- our main subject is patterns in eP ...not EP ...also in gmat "that" does not follow a comma if it is modifying a noun
Quote:
B). a transformation of the plane that carries any directional lines
- noun+ noun modifier = pattern in EP (noun) + a transformation (noun modifier ) CORRECT\
C).
that is, a transformation of the plane which carries any directional lines
-absolute rubbish consruction
D).
which is a transformation of the plane that carries any directional lines
- "which" may modify precdeing noun "Eucl plane" ...now if there isnt a less ambiguous option then D holds ! but we ave B which is clean and unambiguous
E).
or a transformation of the plane carrying any directional lines
- modifier is made a required entity ...change of meaning