<span>The speaker in In Memoriam, A. H. H. by
Alfred, Lord Tennyson, believes in Death's supreme power. [ This might
give an idea of how the poem is an account of all Tennyson's thoughts
and feelings as he copes with his grief over such a long period -
including wrestling with the big philosophico-scientific questions of
his day.</span>
That is the correct answer (a. it reveals the cultural context by discussing popular culture) because the others (b. c. d.) are irrelevant to the phrases.
The correct answer is d. because 12 less means 12 minus then twice a number mean 2 times n labeling "n" as the unknown variable