In south africa, segregating policies of physically separated race groups. a. obsolescence b. apartheid c. deterioration d. urban decay

The answer should be segregating policies of APARTHEID physically separated race groups.

Apartheid regime in SA begun in 1948, after which segregation policies started. The government introduced numerous legislations based on racial classification

So  if  the sum of the enthalpies of the reactants is greater than the products, the  reaction  will be  exothermic.  if  the products side has a larger enthalpy, the  reaction  is  endothermic. you may wonder why  endothermic reactions, which soak up energy or enthalpy from the environment, even happen