Complete the sentence with the correct words.

After we arrived at Makato’s house, I watched with fascination as Makato prepared the food with her daughter, ... As well as the fish, there were portions of sweet potato, spring onion and other fresh, locally grown vegetables. There was also plenty of brown rice and tofu – a soya product high in protein and vitamins. On other days there might be a meat dish too, but the fat would be continuously poured off the meat as it cooked.

• who also looked younger than her 76 years.
• who has studied Okinawa’s centenarians for more than a decade.
• which the Okinawans firmly believe helps to prevent illnesses.
• that the family only ate small portions.
• which is a healthy food and very low in calories.
• since my arrival in Okinawa.
• which is not at all unusual in Okinawa.