Which of the following refers to the maximum amount of people the earth can sustain

"The power of population is so superior to the power of the Earth to produce subsistence for man, that premature death must in some shape or other visit the human race."

The late-18th century philosopher Thomas Malthus wrote these ominous words in an essay on what he saw as the dire future of humanity. Humans' unquenchable urge to reproduce, Malthus argued, would ultimately lead us to overpopulate the planet, eat up all its resources and die in a mass famine.