Final answer:
The bone is the most common distant site to which breast cancer metastasizes, with brain, liver, and lung also being common sites for metastases from breast cancer.
Step-by-step explanation:
The most common distant site to which breast cancer metastasizes is the bone. This is followed by metastases to other common sites such as the brain, liver, and lungs. When cancer cells spread through the bloodstream, they can give rise to new cancers at these distant sites, known as metastases. Breast cancer, much like other types of cancers, can spread to various parts of the body, especially during the later stages of the disease. Metastatic cancer generally presents the worst prognosis and is often associated with a higher rate of cancer deaths. However, the specific pattern of metastasis can vary depending on the primary form of cancer. For breast cancer, bone is notably the most frequent site of metastases.