Question

code block that causes an event will usually begin with which word?

a. on
b. move
c. start
d. set

Explanation:

In programming (related to Computer Science, a subfield of Natural Science), event - handling code blocks often start with "On" to indicate that an action should occur when a particular event happens (e.g., OnClick, OnLoad). "Move", "Start", and "Set" are not typical starting words for event - causing code blocks.

Answer:

A. On