To answer this question, you need to understand the page life cycle in web development.
The correct answer is B) Init(). This method is the first method that is fired during page load.
Here's an explanation of each option:
A) Prerender() - This method is called after the Init() method and before the Load() method. It is not the first method fired during page load.
B) Init() - This method is the first method that is fired during page load. It is used to initialize the page and its controls.
C) Load() - This method is called after the Init() method and Prerender() method. It is used to load the page and its controls.
D) Unload() - This method is called when the page is unloaded or disposed. It is not the first method fired during page load.
Therefore, the correct answer is B) Init(). This option is correct because it is the first method that is fired during page load, as mentioned in the question.