The ornamental design for an lid, as shown and described.
FIG. 1 is a reduced environmental perspective view of the present invention.
FIG. 2 is another perspective view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a right side view of the present invention;
FIG. 5 is a left side view of the present invention;
FIG. 6 is a back view of the present invention;
FIG. 7 is a top view of the present invention; and,
FIG. 8 is a bottom view of the present invention.
The broken lines in FIG. 1 represent the environment in which the design resides whereas the broken lines in FIG. 8 represent the bounds of the claim. None of the broken lines form a part of the claimed design.