Question

My parents are planning an active retirement
A. Onomatopoeia
B. Oxymoron
C. Metaphor
D. Cliche

Answer 1

This is an example of B. Oxymoron

Oxymoron is a poetic device in which you put together two terms that are opposite. In this case, that would be "active retirement". Retirement implies passivity and active is opposite of that.

Answer 2

the answer is B. Oxymoron