Read the sentence to find out whether there is any

Solution

The phrase serious on tackling the crisis is incorrect. The correct preposition is about instead of on. The correct phrase is serious about tackling the crisis. The preposition "about" is correct with the adjective "serious" because in English, we use "serious about" to indicate a focused attitude or commitment toward addressing or dealing with something. The correct sentence will be: "For the state to be seen as serious about tackling the crisis, it must consistently communicate its intent and rise above politics."