Answer :
"Demonstrative" is the one among the following choices given in the question that is the kind of adjective used most frequently in ordinary speech or writing. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has come to your great help.
the correct option is A.
Demonstrative adjectives refers to adjectives that are used to modify nouns or pronouns in sentences and they identify specific nouns or pronouns. Examples of demonstrative adjectives are: this, that, these and those. Demonstrative adjectives help to clearly indicate the object or person one is talking about. Demonstrative adjectives are used very frequently in ordinary speech and writing.