3. what does the speaker mean by “no later light has lightened up
my heaven"?
a the speaker has not smiled since her lover's death.
b the speaker has not fallen in love since her lover's
death
the speaker has lost all appreciation for nature,
d the speaker has lost her religious faith,

I would say that by "No later light has lightened up my heaven", the speaker means that she has not fallen in love since her lover's death. The correct answer is B.

Explanation:

I think B is the most suitable answer because those lines have definitely nothing to do with religion, and I would say that by heaven, she means heart. So, in these lines she is saying that no one ("no later light") has touched her heart ("has lightened up my heaven") since he/she did it, or in the way he/she did it. I think the speaker is using a metaphor.

last one is the answer