A pronoun replaces a noun in order to avoid repetition. In this way, subject pronouns function as the subject of a verb. These are the following subject pronouns in Spanish:
FIRST PERSON.
Singular: yo (I)
Plural: nosotros/nosotras (we)
SECOND PERSON.
Singular: Tú/usted
Plural: Ustedes/vosotros/vosotras
THIRD PERSON:
Singular: él/ella
Plural: ellos/ellas
So, solving this problem, we have:
1. The correct answer is:
c. ella (she). <em>Pronombre Tercera Persona del Singular (Femenino)</em>
2. The correct answer is:
c. él (he). <em>Pronombre Tercera Persona del Singular (Masculino)</em>
4. The correct answer is:
d. ustedes (you). <em>Pronombre Segunda Persona del Plural.</em>
5. The correct answer is:
a. ellas (they). <em>Pronombre Tercera Persona del Plural (Femenino)</em>
<u>Nota.</u> Ellos - Es válido tanto para el género masculino como para referirse a mujeres y hombres en conjunto. En 4. se usa el segundo caso.
It is C. vivan <span> it is impossible for animals live without water</span>
The verb ending is the only thing that changes in present tense form, depending on who does the action. In this case, it is talking about "you" or "tu" meaning that it will end in "-es", or "haces". Therefore the answer would be:
<em>Que haces tu?</em>