For the first blank, options B, C, and E.
Option D is grammatically incorrect and option A is idiomatically incorrect.
For the second blank, option E is eliminated - as copious with is incorrect.
Similarly, option A is eliminated as full with is incorrect English
Between option B and C, the last word in B is incorrect.
Hence option C is the correct answer.
The completed sentence reads as follows:
Old age isn’t what the books promised it would be. Literature is littered with old people for whom the years have brought some combination of wisdom, serenity, authority and power. In fiction, old folks are usually impressive and in control. In life, something less.