Read the following stanza and answer the questions that follow:
Shall I compare thee to a Summer’s Day
Thou art more lovely and more temperate:
Rough winds do shake the darling buds of May’ And summer’s lease hath all too short a date. Sometimes too hot the eye of heaven shines,
And often is his gold complexion dimm’d.

The poem is an example of:

The correct option is: Parampariterupaka (consequential metaphor) because here the superimposition, undermined by a resemblance, is the cause of another superimposition.

Step-by-Step Explanation:
1. Concept of Rupaka (Metaphor): In literary criticism and poetic theory (specifically Indian poetics/Alankara Shastra), Rupaka is a metaphor where the features of the upamana (the object compared to, e.g., a summer's day) are superimposed onto the upameya (the subject of comparison, e.g., the beloved).
2. Understanding Paramparita Rupaka (Consequential Metaphor): This specific class of metaphor arises when one superimposition acts as the cause, justification, or foundation for another superimposition. The subsequent metaphorical comparison relies entirely on the initial metaphor being established.
3. Analyzing the Poem's Metaphorical Structure: In William Shakespeare's Sonnet 18, the poet begins with the question, "Shall I compare thee to a Summer’s Day?" and proceeds to superimpose the qualities of summer onto the beloved ("Thou art more lovely and more temperate").
4. Why it is Parampariterupaka: By superimposing the concept of a "Summer's Day" onto the beloved, the poet sets up a chain of subsequent superimpositions. The subsequent metaphors (such as the sun being the "eye of heaven" and its light being a "gold complexion") only make sense and hold poetic value because of the primary comparison established in the first line. Thus, the initial superimposition, driven by their resemblance, serves as the direct cause for the further superimpositions that follow in the stanza.