The primary goal of wound care in the post-operative period for a patient who underwent amputation is to promote tissue regeneration and wound healing. Proper wound care techniques, including dressing changes, are essential to create an optimal environment for healing and prevent infection.
  
a. Preventing pressure ulcers and skin breakdown: While pressure ulcers and skin breakdown are important considerations in post-operative care, they are not the primary goal of wound care specifically for amputation.
c. Removing all dressings to allow for air exposure: Dressings are typically used to protect the surgical site and promote healing by creating a moist wound environment. Removing all dressings for air exposure is not recommended as it can impede wound healing.
d. Applying topical antibiotics to the surgical site: While topical antibiotics may be used if there is an infection or as directed by the healthcare provider, applying them to the surgical site without proper indication can lead to antibiotic resistance and is not the primary goal of wound care for amputation.