Which vascular supply does NOT contribute to the blood supply of the breast?

The subclavian artery does not directly contribute to the blood supply of the breast. The primary vascular sources for the breast include branches from the axillary artery, such as the lateral thoracic and thoracoacromial arteries, as well as the internal thoracic artery, which gives rise to the medial mammary branches. The intercostal arteries also supply the breast, particularly through their anterior intercostal branches.

The subclavian artery's role is primarily as a major vessel supplying blood to the upper limb and neck, with its branches reaching into areas that do not include the breast directly. The other options—axillary artery, intercostal arteries, and internal thoracic artery—are all directly involved in providing the necessary blood flow to breast tissue, highlighting the subclavian artery's lack of connection to breast vascularization.