C.) Activities that a person likes to spend time doing
I believe the answer is: c understanding constancy and change throughout the lifespan.
In social settings, developmental science research is being done by observing the change that the subjects experience if being put at a certain time of environment over time. Example of its research would be finding out whether there is a correlation between parents income with performance throughout school years.
I'm not fully understanding your question could you please reword and retype it.
Answer:
What moral obligations do we have about the environment
Explanation:
IM PRETTY SURE 95%
Answer:
Trench Weapons.
Grenades.
Underground Mining.
Artillery and Mortars.
Machine-Guns.
Poison Gas.
Rifles.
Tanks and Armoured Vehicles.