The rise of industrialization was accompanied by a loss of fertile land labor-intensive farming the invention of new raw materials an increased use of fossil fuels

The correct answer is option D, an increased use of fossil fuels

Reason -

With the advent of new machines and motors engines during the industrialization era, the use of fossil fuels such as coal, petroleum and oil/lubricants increased due to their various applications in the functioning of these modern era machines and vehicles. In fact fossil energy is considered to be major driver of the fossil energy. The first commercial usage of coal , oil and natural gas started from 1800 onwards  

it takes hundreds of years to become stable.

if you have another question lmk.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.