¿qué zapatos prefieres, los rojos o (those) otros blancos?

It should be "esos" because 1. "Otros"and "blancos" are masculine. (Match subject's gender) 2. Here is a trick: "this" and "these" have "t"s (esto, esta, estos, estas); "that" and "those" don't (eso, esa, esos, esas). 3. "Zapatos" is plural, so match the subject's number. 4. Remember to always match the subject's gender and number. Hope that helps!

The answer is a it says that he/she will practice the interview in third head

I'm fluent. i'm from mexico. : )