Answer:
A.
Empty
Explanation:
Absolute modifiers are adjectives and adverbs that shouldn't be compared or modified because they have an absolute, all-or-nothing quality. Examples of absolute modifiers include complete, perfect, final, total, and (often) unique. For example, the word perfect means 'having no room for improvement.' With that said, Empty is already at its <em>limit </em>you can't say 'I am very empty'.
It’s a natural cause can not be control.
Answer:
Animals are used in scientific research to help us understand our own bodies and how they work. This is necessary to develop new medicines. Animals are also used to safety test potential medicines before they are tested in people and to check the safety of other chemicals.
Explanation:
