Answer:
Conserve.
Explanation:
According to Piaget's framework, Ernesto can't conserve and Lara can <em>conserve</em>. According to Piaget's Theory of Cognitive Development conservation of matter is a process. Ernesto has seen the changes in the dough but he thinks there is more matter. On the other hand, Lara has seen the changes too, but she realized that the amount of dough is the same before and after the changes. No dough was added or taken from the original amount. This is called reversibility and is a necessary condition to acquire conservation.
The main point of the nuclear non-proliferation treaty was not spread the use of nuclear weapons so your best choice would be nuclear energy as a source of fuel was not to be allowed.
