Answer:
Tú
Explanation:
Tú is the only one of those four that is informal.
Tú is informal "you", usted(es) is "formal you (all)".
Ellos is "they".
DVD stands for Digital Versatile Disc. It is commonly known as Digital Video Disc. It is a digital optical disc storage format used to store high capacity data like high quality videos and movies. It is also used to store operating system.
Your answer is the third one
