What does the pronoun this most closely refer to in the passage below (lines 13-14)?

Example:So long as men can breathe or eyes can see,
So long lives this, and this gives life to thee.

Answer choices for the above question

A. the speaker’s love

B. England

C. the ability to see

D. the poem itself

The pronoun "this" most closely refers to "the speaker's love" in the passage.