The following question consists of a sentence which is divided into four parts numbered (1) to (4). Only one part in each sentence is not acceptable is standard written English. Identify the part which contains an error.
Alex was the living proof that a heir was more important to Senor Medena than honour.
1
Alex was the living proof
2
that a heir was
3
more important to Senor Medena
4
than honour.