Which of the following is mentioned as a mission of APEC?

President Obama is back in Washington after a ten-day trip to Asia, his longest trip overseas since he became president. It wrapped up over the weekend in Japan, where he attended APEC, the Asia-Pacific Economic Cooperation. This is a group of 21 member countries, from Australia to Canada—from China to Mexico to the US—and their mission is to improve economies and help the Asia-Pacific region to become more prosperous. No surprise, they talked about how the world economy is still hurting from the recession. And they acknowledged that it’s still hard to say whether things are improving, with so much uncertainty in its members’ economies. APEC nations did agree to work toward increased trade, though. And during the meeting, President Obama talked about some other concerns as well.
    "We spoke about a range of security issues. I reiterated my commitment to get the START Treaty done during the lame duck session and I communicated to Congress that it is a top priority."