The usual definitions of Hispanic include being from the Americas with a mixture of Spanish culture. Thus by those definitions, an Ashkenazi from Argentina is Hispanic, but a Sefardi from Greece is not. Remember that Hispanic culture is a mixture of Iberian culture with that of the Native Americans and the Africans who came as slaves to Latin America.
If the survey makes being Hispanic dependent on coming from “Spain or Portugal” without requiring the American ancestry (using an “or” rather than an “and”), a Sefardi can claim to be Hispanic.