Complete the second clause of the following Prolog program for member/2 where member(X, Y) checks whether X is an element (a member) of a list Y. member(X,[X|R]). member(X,[Y|R]) :- .A. member(X, R).
B. member(X, Y).
C. member(_,R).
D. member(Y, R).
E. member(X, Y).

Which tab should you open to find the option for adding a header?

Pp 4.1 design and implement a class called sphere that contains instance data that represents the sphere’s diameter. define the sphere constructor to accept and initialize the diameter and include getter and setter methods for the diameter. include methods that calculate and return the volume and surface area of the sphere (see pp 3.5 for the formulas). include a tostring method that returns a one-line description of the sphere. create a driver class called multisphere, whose main method instantiates and updates several sphere objects.

Which demographic challenge is europe currently experiencing? a. an aging and decreasing population b. a baby boomc. an unequal distribution between males and females d. a large group of teenagers moving through the school system(i chose a but i'm unsure)