Help me w this pls i don’t understand

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

What is the value of the standard enthalpy of formation of an element in its most stable form?