I need help with these problems !!! please provide some detail explanation. Thank you so much!!!

An important factor determining the extent of homelessness is: A. The amount of \"buildable\" land in an urban area B. None of the other alternatives mentioned C. The density of population in an urban area D. Regulation of the housing market, such as zoning and building codes, that increase the price of housing The difference between the land-weighted density and population-weighted density occurs because A. population is equally distributed over the area B. population is unequally distributed over the area C. population is bimodally distributed over the area D. population is normally distributed over the area In most U.S. metropolitan areas, land-weighted density is A. greater than population-weighted density B. less than populationweighted density C. equal to population-weighted density D. variable it does not exhibit any regularity A market failure due to a traffic congestion externality can best be addressed by: A. increasing parking fees. B. Eliminating automobiles. C. imposing appropriate congestion tolls. D. Doubling gas taxes. According to Brueckner, the increase in household utility is greatest for O A. IG O B. HV O C. PRS O D. PH