Which statement describes the Second Class Headrights?

The statement that describes the Second Class Headrights as a conditional grant requiring three years of residency is indeed accurate. Under the headright system, settlers who came to Texas were granted land based on their residency to encourage settlement in the region. The requirement of three years of residency indicates that individuals had to establish themselves in the area, which served to promote stability and development in the growing community. This condition distinguished Second Class Headrights from other types of grants that may have different requirements or benefits.

The other options relate to different aspects of land grants or headright systems that do not accurately represent Second Class Headrights. For example, the issuance to families who arrived before 1836 pertains more closely to First Class Headrights, which were often given to early settlers. Additionally, the specific allocation of land, such as 1 league and 1 labor to single men, is not pertinent to Second Class Headrights as it refers to another classification. Lastly, the guarantee of ownership of all navigable streams falls outside the scope of land grants and addresses water rights, which were not included within those headright provisions.