The adjective forms that compares only two people, places, or things is Comparative form.
Answer: Option C
<u>Explanation:</u>
There are three forms of Adjectives: Positive, Comparative, and Superlative. If we have to make a comparison between any two objects, places, or people, then we make use of Comparative form.
For example: ‘Rahul is taller than Saurabh.’ In this sentence a comparison is made between Rahul and Saurabh. One rule that applies in this type of form is that such forms consists of words that ends with ‘-er’ and ‘-est.’ We can see in the example taller is a word that ends with -er.