Select from the following.
(1). the skin
(2). tube
(3). evaporation
(4). a tongue
(5). electricity
(6). fur and fat
(7). the bones
(8). the mouth
Given those answer options, answer the question: Fact 1: Skin is used for protecting the body from harmful substances. Fact 2: Acids are harmful to tissue. Given the two facts above, what is used to protect the body from acid?
A:
(1).