Use of English PRO

There are many different varieties of (0) THE Spanish national dish, Paella, with every region claiming their recipe (1) ............ the most authentic. Paella originates in Valencia, in Eastern Spain, which is the undisputed source (2) ............ the dish. 'Arroz', the Spanish word for rice, is in (3) ............ derived from Arabic while 'paella' comes (4) ............ old Valencian and probably has its roots in the Latin 'patella' meaning pan. Traditionally, farmers cooked their Paella over a wood fire for the lunchtime meal and would include rice and whatever (5) ............ was available at the time: tomatoes, onions, beans, rabbit and duck were all common ingredients. Paella is traditionally eaten straight from the pan in (6) ............ it was cooked with each person using his own spoon. Recipes for various renditions of the 'Valencian rice' spread quickly (7) ............ many parts of Spain and all over the world. Valencia's coastal location makes (8) ............ inevitable that seafood is used in the dish but 'true' Paella Valenciana contains no seafood.