What is the passage? or where is it?
The answer is either the first or last one all X intercepts have a Y of zero, you did not give enough information to determine if it is negative or positive for the X value but if the X intercept is on the left side of the Y axis that means that it is the first answer if it is on the right side it is the last answer.
Aida is the answer to which opera was written to celebrate the opening of the suez canal
It is in the present participle.