Which words in the sentence are the predicate adjectives? a snake's skin feels dry and smooth to the touch. choose all answers that are correct.
a. touch
b. skin
c. snake's
d. dry
e. smooth

The two words in the above sentence which are predicate adjectives are d. dry and e. smooth. 
A predicate adjective is similar to a subject adjective. It modifies the subject of the sentence. It is also sometimes called a subject complement because it adds to or complements the subject. It adds an attribute to a subject. For example, a simple sentence is:
I love cars. 
The object is "I", the verb is "love" and the subject is "cars". The predicate is a combination of the verb and the subject. If I add the word "red" to the sentence ie. 
I love red cars. 
I am describing the cars as being red. Therefore, in this case the predicate adjective is the word "red".