The actual question on PLATO, though it doesn't say it here, is:
Which TWO sets of lines in the poem illustrate that death's power is an illusion?
Which means the answers are:
Mighty and dreadful, for thou art not so; For those whom thou think'st thou dost overthrow
And:
One short sleep past, we wake eternally, and death shall be no more; Death, thou shalt die
Also I took the test and got it right