Sink

FIG. 1 is an upper front perspective view of the sink embodying my new design;

FIG. 2 is an upper rear perspective view thereof;

FIG. 3 is a lower rear perspective view thereof;

FIG. 4 is a front side elevation view thereof;

FIG. 5 is a rear side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a left side elevation cross-section view thereof, taken along the line 9 - 9 from FIG. 7 ; and,

FIG. 10 is a right side environmental elevation view thereof.

Dashed lines form no part of the claimed design and represent the unclaimed environment.