The ornamental design for a seat, as shown and described.
FIG. 1 is a perspective view of a first embodiment of a seat according to the design;
FIG. 2 is a front view of the seat of FIG. 1;
FIG. 3 is a rear view of the seat of FIG. 1;
FIG. 4 is a left side view of the seat of FIG. 1;
FIG. 5 is a right side view of the seat of FIG. 1;
FIG. 6 is a top view of the seat of FIG. 1;
FIG. 7 is a perspective view of second embodiment of a seat according to the design;
FIG. 8 is a front view of the seat of FIG. 7;
FIG. 9 is a rear view of the seat of FIG. 7;
FIG. 10 is a left side view of the seat of FIG. 7;
FIG. 11 is a right side view of the seat of FIG. 7; and,
FIG. 12 is a top view of the seat of FIG. 7.
The broken lines that are included in all of the figures of the drawings denote aspects of the seat that form no part of the claimed designs.
For each of the two embodiments illustrated in FIGS. 1-12, the bottom views are omitted, because they are plain and unornamented and, therefore, form no part of the claimed designs.