Objective: how to make tomato-basil rice

Which of the following solutions is more sound in terms of naive physics reasoning?

OPT:
I. Saute 1 small chopped onion in 1 tablespoon olive oil in a saucepan over medium heat, 5 minutes. Stir in 2 cups converted rice, then add one 15-ounce can tomato sauce and 1 1/4 cups water. Bring to a boil, then reduce the heat to low and stir; cover and cook until tender, about 15 minutes. Let sit, covered, 5 minutes, then stir in 1/2 cup chopped basil and season with salt.;
II. Saute 1 small chopped watermelon in 1 tablespoon olive oil in a saucepan over medium heat, 5 minutes. Stir in 2 cups converted rice, then add one 15-ounce can tomato sauce and 1 1/4 cups water. Bring to a boil, then reduce the heat to low and stir; cover and cook until tender, about 15 minutes. Let sit, covered, 5 minutes, then stir in 1/2 cup chopped basil and season with salt.;
I.