Read the text and complete the gaps with the appropriate prepositions and then, mark the right alternative.

Going vegan: Weighing the risks and benefits A vegan diet includes only plant-based foods – no eggs, dairy or animal products of any kind. Studies have shown that vegans tend to have lower body mass indexes (BMIs) and a reduced risk of diabetes, heart disease and cancer. But they are also more vulnerable to nutritional deficiencies including: B12, omega-3 fatty acids, vitamins A & D, iron, zinc, calcium. All of these vitamins and nutrients are vital for regulating energy and mood –

(1) _______ other important functions – so vegans should be sure to eat a lot of foods like: fruits and vegetables, whole grains, legumes, nuts, seeds, beans. If you’re thinking about going vegan, talk to your doctor and/or a nutritionist first and follow up

(2) ________ them if you need to make adjustments to your diet.

a.
(1) through; (2) of

b.
(1) between; (2) to

c.
(1) among; (2) after

d.
(1) among; (2) with

e.
(1) along; (2) for