Explanation: It is denoted or derived from Greek word "sonetto" which implies or mean "little lyric or song". It has 14 lines and is written in iambic parameters. Each lines has a specific scheme of rhymes and Volta or specific turn. It reflect upon a single sentiment with clarification in it including lines.
C is the answer some may say otherwise but the key word(s) that make it an opinion to be argued are; inadequate. That word is a big red flag showing its an opinion. not all people think Rhodes so called small gestures are inadequate.