Immortal
Immortal refers to something that is not subject to death or decay. In the context of the given options, "Immortal" is the best choice because it directly contrasts with mortal, which means subject to death. Here's why "Immortal" is the correct answer:
- Divine: While divine beings are often considered immortal, the term itself refers more to god-like qualities rather than immortality. Divine beings can still possess mortality in certain mythologies or belief systems.
- Immortal: Immortality means living forever, free from death. It is the opposite of mortal, which refers to beings that are subject to death.
- Spiritual: Spiritual beings may or may not be immortal. Spirituality is more about the non-physical essence of a being rather than its mortality or immortality.
- Eternal: Eternal also implies something that is everlasting or timeless, similar to immortality. However, eternal can also refer to concepts or ideas that are enduring rather than beings that are immortal.
In conclusion, while all the options have connections to the idea of immortality in some way, "Immortal" is the most direct and appropriate choice given the context of contrasting with mortal.