Q.My Elephant Ear Plant Has Grown For Years But Now Has Only One Leaf And Not Regenerating. Is It Dying?
How can I tell if this plant will not survive?

Certified GKH Gardening Expert
Unfortunately, your photo did not come through. I cannot see to identify the issue.
There are a few things that could be wrong, though.
Usually, if this is in container, this is caused by lack of nutrients. They are semi heavy feeders, and like to be fed a few times per year.
If this is in ground, I would look more to environmental factors that are leading to a decline.
Here are some articles that will help:
https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/growing-elephant-ear-plants.htm
https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/elephant-ear-plant-types.htm
https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/elephant-ear-plant-diseases.htm
https://www.gardeningknowhow.com/houseplants/alocasia-plant/growing-african-mask-plant.htm
https://www.gardeningknowhow.com/houseplants/alocasia-plant/fertilizing-alocasia-plants.htm