Under which act would one go to legally change their name?

The option referring to the Change of Name Act is correct because it specifically provides the legislative framework for individuals seeking to legally change their names in Ontario. This Act outlines the procedures required to apply for a name change, the necessary documentation, and the processes through which an individual can receive legal recognition of their new name.

Understanding the specific terminology and legal framework is crucial, as each option may sound plausible but ultimately only one specifies the correct legal structure applicable in Ontario for this action. The Change of Name Act clearly delineates the requirements and process involved, making it the authoritative source for name alterations in this jurisdiction.