According to piaget, during their first year, infants develop the understanding that an object continues to exist even when you cannot see it or touch it.

The answer is object permanence. This exist in an infant when they are able to gain understanding regarding about objects that exist even if they are not being clearly observed by them such as smelling, sensing, hearing or touching those objects.

i think the answer is true : ))

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.