Who predicted that food resources would continually become scarce as the world population increased

a. Charles Darwin

b. Graham Sumner

c. Herbert Spencer

d. Thomas Malthus

The answer is letter d. Thomas Malthus. He believe that if population were to grow unchecked it would lead to famine and low food production. He wrote about in this in his work Malthusian Catastrophe. He later added that this would not lead to catastrophe but it would limit the growth of population.