Fast food addiction

1. According to paragraph 1, “its” refers to c)US.
2. According to paragraph 2, “these substances” refers to d)sugar and fat.
3. According to paragraph 2, “that” refers tob)fast food meals.
4. According to paragraph 2, “this meal-sized portion” refers to a)2000 calories.
5. According to paragraph 3, “these naturally occurring painkillers” refers to a)beta-endorphins.
6. According to paragraph 3, “here” refers to d)the nucleus accumbens
7. According to paragraph 3, “its” refers to d)individual.
8. According to paragraph 4, “their” refers to a)animal.
9. According to paragraph 4, “this” refers to a)the fact that animals were found to ingest increasing amounts of the potent liquid.
10. According to paragraph 4, “a greater quantity” refers to c)the potent liquid.
11. According to paragraph 5, “this” refers to d)the heftier the individual, the fewer dopamine receptors are present