Answer:a
Explanation:because it just is
What is the difference between formal and informal language?
Formal and informal language serve different purposes. The tone, the choice of words and the way the words are put together vary between the two styles. Formal language is less personal than informal language. It is used when writing for professional or academic purposes like university assignments. Formal language does not use colloquialisms, contractions or first person pronouns such as ‘I’ or ‘We’.
Informal language is more casual and spontaneous.
You would definitely underweight. The villi in your small intestines increase intestinal absorptive surface area approximately 30-fold and 600-fold respectively. This provides exceptionally efficient absorption of nutrients in the lumen. This increases the surface area for food to be absorbed. So if there were to be less villi you would underweight.