Final answer:
"Sonnet 30" is a Shakespearian sonnet, characterized by its ABAB CDCD EFEF GG rhyme scheme and structure of three quatrains followed by a couplet.
Step-by-step explanation:
The type of sonnet that "Sonnet 30" is can be identified by looking at the rhyme scheme and stanza structure. A Shakespearian sonnet has a rhyme scheme of ABAB CDCD EFEF GG and is composed of three quatrains followed by a couplet. Adhering to these characteristics, "Sonnet 30" falls into the category of a Shakespearian sonnet, as it maintains the rhyme scheme and stanza structure typical of Shakespeare's work.