This document discusses the definition and requirements of a valid acceptance of an offer in contract law. It provides the case of Master v Cameron (1954) which established that an agreement is not final if it requires approval from solicitors, allowing them to alter terms. A valid acceptance must be unconditional, communicated within a reasonable time through usual means like oral or written forms, and cannot be conveyed through silence. Performing actions can also signify acceptance if it clearly shows agreement to the offer's terms.