The phrase "alternatives appear" is correct and usable in written English.
It can be used when discussing options or choices that become visible or available in a particular context.
Example: "As the project progressed, various alternatives appear that could enhance our approach."
Alternatives: "options emerge" or "choices arise".
The environmental risks associated with the later seem too severe when alternatives appear to be available.
For now, customers with few alternatives appear willing to absorb the relatively high prices.
The alternatives appear to be moping, soul-searching, or moving to the right, which many liberals have already been doing for a decade or so.
When the attraction of marriage decreases and alternatives appear, the possibility of divorce will increase evidently.
In terms of Fig. 1, all the alternatives appear to lie on the same indifference curve, which results in illogical rankings of naturally ordered alternatives.
If the alternatives appear to be dependent or heterogeneous, there may be similarity and heterogeneity problems among alternatives, which are called alternatives similarity and alternatives heterogeneity, respectively.
The companies' search for alternatives appears to have been prompted by Northwest's decision in December to eliminate corporate discounts on its lowest published fares.
In a demonstration, an on-screen map revealed roughly 1,700 parking lots in New York City, while in a car's center console a couple of nearby alternatives appeared along with distance and pricing information.
All the other alternatives appeared in "Phase 1," similar to Lyon, Lisbon, and Athens.
One showed a panel titled "alternatives" appearing at the top of search results on Google Maps.
When metro and LRT lines are treated similarly (no weights are applied to the LRT lines), all alternatives appeared in "Phase 2".
