question on risk - avoid vs mitigate

here is a question that i would need advices

Q146
In your project, you want to extend the project schedule to reduce the threat that your project may not get the resources in time to complete the project. This is an example of.
1 ) develop schedule
2 ) Avoid risk
3 ) Mitigate risk
4 ) Secondary risk

Ans is 2

Pmbok def :

Risk avoidance involve changing plan to eliminate the threat. This include extending the schedule, changing the strategy or reducing scope

Vs

Mitigation is Taking early action to reduce the probability

As question says you Reduce the threats, you do not eliminate it, why the Answer is Avoid ?

Here the risk is "Ontime completion of the project".


If the schedule is extended, then it is possible to eliminate the schedule risk.

but it doesnt say it will Eliminate the schedule risk

 

it says

 

it will reduce the threat

 

This is an example of mitigate risk because as the question say you are extending your schedule in order reduce the threat i.e lower the probability and impact of threat occuring .

Avoid risk would have been cancelling the project/ identify new resources that are avialable on time/ change scope etc.