I believe the correct answer is
A. <span>by professing his love for Gwendolen and promising to buy a house for her</span>
Sometimes, poems use a word that has several synonyms. When reading a poem and when analyzing the writing, you should check the definition of the word based on how it was used in the poem. Always remember that there are words that could mean a different thing when used.
<span>No sé qué Holden me mira </span>
