Which of the following improves upon a claim regarding Russia's defeat in the Crimean

War? (1 point)

1. changing "lack of infrastructure" to "backward military"

2. replacing "multifront war" with "outdated military equipment"

3. changing "lack of alliances" to "diplomatic failures"

4. replacing "diseases" with "a multifront war"

The option that improves upon the claim regarding Russia's defeat in the Crimean War is:

4. replacing "diseases" with "a multifront war"