Which of the following is an example of maturation?
cameron notices that a thunder clap always seems to follow a bolt of lightning.
one-year-old baby jesse could not walk two months ago, but now he can.
sahara will not touch a hot stove because she burned herself one time by doing so.
mitchell now completes homework assignments the same night he receives them because otherwise he tends to forget about them.

One-year-old baby Jesse could not walk two months ago, but now he can.

Explanation:

Maturation is known to be the procedure through which an individual go through natural development in size, physical growth and so on.  This process starts from childhood when an individual is born till death. For example, during childhood it occurs when a child is growing up. Thus, a child who does what he or she cannot do before is passing through the process of maturation.

One-year-old baby Jesse could not walk two months ago, but now he can is an example of maturation.

sorry but your romanian isn't clear could you just translate to english

explanation:

do your own work

you really need to do your own work and stop cheating