Final answer:
Option 3, originating legislation for raising revenue, is not an exclusive power of the Senate; it's a power of the House of Representatives.
Step-by-step explanation:
The question asks which of the given options is not an exclusive constitutional power granted only to the Senate. The Senate has several exclusive powers, such as conducting impeachment trials, confirming Supreme Court appointments, confirming ambassadorial appointments, and ratifying treaties. However, the option of originating legislation for raising revenue is not a power of the Senate; it is a power of the House of Representatives, as per Article I, Section 7 of the U.S. Constitution.