Question

(Thoese ones over there) son los hijos de mi amigo.

Answer 1

C. aquellos yo soy español haha

Answer 2

The correct answer is:  [C]:  "Aquellos" .
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Note:  We are referring to masculine plural ("los hijos") ; 

We use "Aquellos" (not "Esos") ; since we are referring to "those (ones) over there."


"Aquellos" refers to masculine plural — (or mixed group of feminine and masculine—or even one masculine and any number of feminine) — and is an adjective modifying masculine nouns or group of masculine nouns, or a [group of masculine and feminine nouns—of which at least one noun is masculine]— for "those (ones) over there."

As such:  "Answer choice:  [C]:  "Aquellos" ; is the correct answer.
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Note:
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Choice  [A]:  "Aquellas" ; refers to feminine plural — and an adjective modifying a feminine noun or group of plural feminine nouns— for "those (ones) over there."
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Choice  [B]:   "Aquello" ; refers to "that which" ;  and does not modify a particular object, place, or person.  "Aquello"—is neither masculine nor feminine.  It is "neutral".
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Choice  [D]:   "Aquel" ; refers to masculine singular— and an adjective modifying a singular masculine Spanish noun — for "that (one) over there."
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       →  Answer choice:  [C]:  "Aquellos" ; is the correct answer.
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