Concept:The word
temporarily means for a limited time; its opposite means for all time.
Explanation:Something done temporarily is not lasting forever.
It is done for a short or fixed period only.
Now examine each option.
A. constantly means all the time without stopping, which is not opposite.
B. deliberately means on purpose, which is not opposite.
C. legally means according to law, which is not opposite.
D. permanently means lasting forever or for an unlimited period.
Therefore, the correct antonym of temporarily is permanently.
Answer:D. permanently