When the President vetoes a bill he (Points : 1)

What are your choices? What is your answer?

must veto the entire bill.

may veto the items he thinks are not important.
must submit his veto recommendation to his entire Cabinet for approval.
must justify his veto to Congress.

http://usgovinfo.about.com/od/thepresidentandcabinet/a/presveto.htm

I'll be glad to check your answer.

When the President vetoes a bill, he uses his constitutional power to reject the bill and prevent it from becoming a law. This means the bill does not go into effect and cannot be enacted. However, the veto can be overridden if both houses of Congress (the House of Representatives and the Senate) vote by a two-thirds majority to pass the bill despite the President's veto. So, to answer your question, when the President vetoes a bill he exercises his veto power.