The answers is c.
Explication
Yes I think it’s right because it’s saying that it doesn’t get old and it feels like it was just written.
D. Mrs. Mallard had loved her husband, but she is happy that she is free.
I think this is accurate, and out of the options it looks like the best choice, but I am not certain.
For capital letters, we can just add the ending -s, for example:
I got As in the final exam.
for lower-case letters, an apostrophe is used to avoid confusion:
In the multiple-choice exam all the correct answers happened to be a's! (as in: option a)