Senatorial courtesy refers to the tradition whereby:

What are your choices?

You may need to type these choices if copy and paste doesn't work.

A.nominees for federal judgeships are treated with respect during Senate confirmation hearing,even by senators who plan to vote against the nominee.

B.senators usually defer to the president's choice of Supreme court nominees.
C.senators are consulted on the nomination of lower court federal judgeships located in their state.

http://en.wikipedia.org/wiki/Senatorial_courtesy

so it's (B)

Nope.

Good heavens! Some Congresses fight the President every inch of the way on the Supreme Court nominees.

is it (A)

D.nominations for the federal courts,once committee hearings are concluded,are scheduled for a vote ahead of other Senate business.

I still think it is (A)

Senatorial courtesy refers to the tradition in the United States Senate where the President of the United States consults with the senators from the state in which a federal judicial appointment is being made. The purpose of this tradition is to show respect for the Senate's role in the confirmation process and to gain insight into the qualifications and suitability of the nominee.

To further understand the concept of senatorial courtesy, it is helpful to consider its historical context and the process by which federal judges are appointed. When a vacancy occurs in a federal judgeship, it is the President's responsibility to nominate a candidate to fill that seat. The Constitution grants the President the power to make these appointments, subject to confirmation by the Senate.

Traditionally, when a vacancy arises in a federal judgeship within a particular state, the President consults with the senators from that state before making a nomination. The senators are given an opportunity to express their approval or disapproval of the potential nominee. This consultation is a way for the President to gather valuable information about the nominee's qualifications and to ensure that the candidate would be acceptable to the senators representing the state.

Senatorial courtesy is not a constitutional requirement, but it has become an established practice that Presidents generally follow. However, it is worth noting that over time, the extent and significance of senatorial courtesy have varied, and it has been subject to some controversy and debate.

Overall, senatorial courtesy is rooted in the belief that the Senate should have an active role in the confirmation of federal judges, particularly those from their own states. It is intended to promote cooperation and respect between the executive and legislative branches of government in the appointment process.