Did you see those cars? viste esas coches? viste eses coches? ' viste astos coches? viste aquellos coches?

The correct answer is:  [D]:  "¿Viste aquellos coches?" 

Note:  Among the FOUR (4) answer choices provided,  
            →  this very answer choice:  [D]:  "¿Viste aquellos coches?" ; 
                 is the best answer choice.

   One translation of:  "those cars"; would be:  "esos coches" ; however, that is NOT among the answer choices given.  

{Note:  "esos" is the correct, masculine plural form of the Spanish adjective [for the English word, "those"] that modifies "coches".   Note:  "los coches" is masculine plural.

Note:  "aquellos coches" ;  which is: 

     "Answer choice:  [D]:  "aquellos coches" ;   does translate to "those cars" ;

→  and "aquellos" is the correct, masculine plural form of the Spanish
adjective [for the English word, "those"].

Note:  "aquellos coches"  translates to "those cars" (in English)—in the sense of: "those cars [way over there]" .

The answer to your following question is carpet.

Cuando una persona es vieja, se cree que es mas joven.