Let S be a compact
Hausdorff space, X a Banach space, C(S,X) the Banach space of all continuous
X-valued functions on S equipped with the supremum norm. In this paper a
necessary and sufficient condition on X for every Stone-Weierstrass subspace
of C(S,X) to be proximinal is established. Furthermore, it is shown that
every such subspace is proximinal if X is a dual locally uniformly convex
space.