Which of the following statements is true of the ethnic and racial diversity in the American workforce?

a$.$ Illegal immigrants make up about $5$ percent of the labor force.

b$.$ By $2050,$ the labor force participation rate of Hispanics is projected to be around $80$ percent.

c$.$ Minorities in the United States are decreasing relative to the total population.

d$.$ By $2024,$ Hispanics are projected to make up nearly one$-$tenth of the labor force.