What does the narrator of my last duchess say brought joy to the duchess's face?

a. his own presence
b. the portrait
c. attention from other men
d. being the object of a planning

i want to say the answer is either a or b

The narrator of ‘My Last Duchess’s says that ‘the attention of other men' brought joy to the Duchess’ face.  

Explanation:

The poem My Last Duchess’ is a dramatic monologue written by Robert Browning.  The narrator is the Duke of Ferrara, a proud and cruel duke. He despised his young wife- the last Duchess for smiling at every person she met.

He was suspicious of her character and mistook her congenial nature for infidelity. He felt she showered every man she met with the same affection. So he points out at the blush of her cheek in her portrait to be a result of the attention she got from the other men.  

i love cake

and don't hate

i know i'm fat

but what's wrong with that

i cant rap

but im sure ya know that

its just for fun

so quit hatin' son

~courtney