http://i63.tinypic.com/332qdn8.jpg - Question 11 why is the answer (b)..?

11.
Calcium oxide, iron(II) oxide and copper(II) oxide are basic oxides, which can undergo neutralization with strong acids to form salts, but CANNOT undergo neutralization with strong alkalis.

Zinc oxide is an amphoteric oxide, which can undergo neutralization with both strong acids and strong alkalis to form salts.

Zinc oxide neutralizes sodium hydroxide to form the salt sodium zincate. The equation is :
ZnO(s) + H₂O(l) + 2NaOH → Na₂[Zn(OH)₄](aq)

...... The answer is: D. zinc oxide

(The answer is D, but NOT B.)