Afederally funded project was halted when an endangered species was found on the land. this probably occurred because
a. the u. s endangered species act forbids the development
b. a reintroduction program was under way
c. the endangered species was an animal and not a plant
d. the endangered species list needed to be updated

The correct answer is option A.

Explanation:

One of the most effective and important environmental laws of the United States is the Endangered Species Act. It signifies a commitment by the citizens of the nation to restore and protect the species that are at threat of getting disappeared forever. The Act was passed in 1973 by the government established at that time.  

The act provides balanced solutions for the landowners, government agencies, and concerned individuals to safeguard wildlife and the habitat in which they live. Thus, the act is encouraged to prevent extinction, recover jeopardized animals and plants, and safeguard the ecosystems on which they rely upon.  

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.