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A.Elema y yo = somos
B.Juan y tú = son
C.Juan y Elena = son

I choose this answer because YO is used when they refer to you.When they say TÚ they're  saying they refer to someone else.When there are two names they refer to them.

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All Spanish verbs end in ar,er, or ir

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Ser
Hablar

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Change the verb to match the subject

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Ellos son deportistas.
Él es deportista.

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To be and it is a VERB

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Nosotros somos atléticos.

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Ella es cómica.

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Tú eres inteligente.

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Yo soy alta.

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Examples  of How to use Subject Pronouns Correctly

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Examples  of How to use Subject Pronouns Correctly

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Here is the six pack of Subject Pronouns

# data[].attributes.subject
Here is the six pack of Subject Pronouns

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Nosotros,Nosotras

Vosotros,Vosotras

Ellos,Ellas,Ustedes

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Yo

Tú

Él,Ella,Usted

# data[].attributes.body
Replaces the noun