The exhibit shows an internal source address and port being translated to a different external source address and port. This behavior identifies source NAT with Port Address Translation. Source NAT changes the source IP address of traffic leaving the SRX, commonly allowing private hosts to access public networks. PAT extends this by translating the source port as well, allowing multiple internal devices or sessions to share a smaller number of public addresses, often a single public IP address. The exhibit does not show destination NAT because the translated value is associated with the internal client’s source identity, not the destination server address. It is not source NAT without PAT because the port number is also changed. Therefore, source NAT with PAT is the correct answer.