Explanation:

- When tensions arise, forces need to be positioned strategically. This is often described as being "deployed," which means they are organized and moved into place for military readiness.

- "Deposited" usually refers to placing something somewhere, like money in a bank, but doesn't imply strategic positioning of forces.

- "Departed" implies leaving a place, which is the opposite of what forces do when stationed or ready for action.

- "Deported" means to expel someone from a country, and is not related to military positioning.

Given the context of military readiness, the most appropriate word is:

Option 2: deployed

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