Answer:
Finally,
Step-by-step explanation:
"Therefore" is used to express a conclusion following a hypothesis, this means you aren't adding to a prior statement but drawing a conclusion or result.
"However" is used to express contradiction, so it is not used to add to a prior statement but present an opposing statement.
"For example" presents an example statement, you're not adding another point but illustrating a previous point.
"Finally" is closest because it represents something other that has taken the last spot in a list of points.