Option 1 states that Mohamed Nasheed was the first President of Maldives to be elected through multiparty elections. This means that he was elected as President in a democratic manner, allowing multiple political parties to participate in the election process. It signifies a milestone in the political history of Maldives, as previous presidents were not elected through multiparty elections.

Option 2 states that he became the President of Maldives in 2008. This indicates the year when Mohamed Nasheed assumed office as the President.

Option 3 states that he was a strong advocate of the policies of long-time President Maumoon Abdul Gayoom. This statement is not correct, as Mohamed Nasheed was known for his opposition to the policies of President Gayoom rather than being an advocate for them.

Option 4 states that he has been advocating and promoting democracy and human rights in Maldives. This statement is correct, as Mohamed Nasheed is known for his active involvement in advocating for democratic reforms and the protection of human rights in Maldives.

In conclusion, option 3 is the incorrect statement as Mohamed Nasheed was not a strong advocate of the policies of President Maumoon Abdul Gayoom.