Which argument is chamberlain trying to communicate in this passage?

The following text is an excerpt from a speech given by Neville Chamberlain that was broadcast on British radio on September 27, 1938.

After Hitler rejected British and French concessions to give Germany parts of the Sudetenland, the British people began to prepare for war. Bomb drills were held and people began to dig trenches.

Which argument is Chamberlain trying to communicate in this passage?

War is terrible and should only be entered into with clear justification.

War is a necessary evil that often results in a lasting peace.

War is scary, but it is the only way to stop aggressive nations.

War should only be undertaken when a country can be assured of victory.

War is terrible and should only be entered into with clear justification.

Explanation:

This speech by the British Prime Minister was broadcasted after the negotiations with Adolf Hitler, German Chancellor at the time, to reach a peaceful resolution to the Sudeten quarrel had failed, as Hitler refused to accept the annexation of only some areas of the Sudetenland.

Therefore, Chamberlain explains that is time to consider the possibility of having to go to war as justified, despite being always a horrible event.

a and b!

dfroos means which is a and b