Answer:
Option B, 2 parallel lines
Step-by-step explanation:
Complete question
The locus of points in a plane 3 units from the line y = 1
A ray
B. 2 parallel lines
C. circle
D. plane
Solution
A group of points whose location is determined by more than one or at least one specified condition is called a locus. Locus of a line could be a set of points that form a line or a surface satisfying the condition of line in the plane.
Hence, option B is correct
