I claim the ornamental design for a parasol, as shown and described.
FIG. 1 is a front view of an embodiment of a parasol according to the present invention with the parasol shown in a first position. The rear view thereof is identical to the view of FIG. 1.
FIG. 2 is a bottom perspective view of the parasol of FIG. 1 with the parasol in the first position.
FIG. 3 is a bottom plan view of the parasol of FIG. 1, with the parasol in the first position and the broken lines representing the environmental structure removed;
FIG. 4 is a top plan view of the parasol of FIG. 1 with the parasol in the first position.
FIG. 5 is a front view of the parasol of FIG. 1 with the parasol shown in a second position. The rear view thereof is identical to the view of FIG. 5.
FIG. 6 is a bottom perspective view of the parasol of FIG. 1 with the parasol in the second position.
FIG. 7 is an enlarged bottom plan view of the parasol of FIG. 1, with the parasol in the second position and the broken lines representing the environmental structure removed; and,
FIG. 8 is an enlarged top plan view of the parasol of FIG. 1, with the parasol in the second position.
Features illustrated in broken lines in the Figures depict environmental structure shown for illustrative purposes only and form no part of the claimed design.