An object's motion changes
a.
when the forces acting on the object remain balanced.
b.
only if the object is at rest when a force acts upon it.
c.
only when a nonzero net force is applied to the object.
d.
all of these

The answer is D, because if the all of them will either stop the object in motion or move an object that is staying still.

Explanation:

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)

meiosis is the correct answer