The defects occurring at a single lattice point are known as
-
disclinations.
-
edge dislocations.
-
point defects.
-
srew dislocation.
C
Correct answer
Explanation
Point defects are defects that occur only at or around a single lattice point. They are not extended in space in any dimension. Strict limits for how small a point defect is, are generally not defined explicitly, but typically these defects involve at most a few extra or missing atoms.