Connotations can be fixed or subjective.
Connotations are the emotions that we associate with a given word. While most of the time, these are fixed (i.e. some words arouse pleasure while others contempt), they can be subjective. (i.e. for someone who is afraid of dogs, the word dog can imply danger, whereas for someone who loves dogs, the word can be a source of comfort and pleasure).
I believe this answer is correct
The ninth line of the sonnet brings in a major change of tone. Shakespeare jumps on elaborating the immortality of his lover rather than continuing the criticism of the sun. Moreover, the limitations of nature are replaced by his lover’s thoughts and he claims that his darling is not bounded by the rules that are being displayed.
In line-4, the summer is stated as ”eternal summer”, since it keeps returning every year. And noticing from the previous personifications employed in the sonnet, we can easily recognize the similarity between “summer’s day” and “thee”. Both can be eternal or can fade with time. This is the major reason why the author takes a turn on line-9, as both of them have only one threat-time; and the third force that can eternalize them both is the poetry that the author has created.
To conclude, we can easily notice the turn in topic and breaking of the stanza.
