The correct option is B the / the
The word 'a' is an indefinite article. It is used for nouns that are not specific/particular. For e.g. 'a man'.
The
word 'the' is a definite article; it modifies a noun that is specific, a
noun whose identity is made known. For e.g. 'the man in black'.
In
the given conversation, the noun 'book' is a particular book that the
subject Q was talking about. Hence, we use the article 'the'.
The
noun 'life' is also specific, because it is the life of Queen Victoria.
The identity of the noun 'life' is made known using the proper noun
Queen Victoria. Hence, we use the article 'the' in the second blank too.
This combination 'the, the' is used only in option B, hence B is correct.
Options A and C: We can't use 'a' for the nouns 'book' and 'life' for the same reason: the nouns are specific.
Hence options A and C are incorrect.
Option
D: An article is not required when the noun is non-count or it's spoken
of in general sense. Since both nouns here are clearly identified, we
require articles and option D is incorrect.