Who did Baba Guru Nanak appoint as one of his disciples to succeed him as the preceptor (guru)?

Guru Angad

The correct answer is Option (2) → Guru Angad

"Baba Guru Nanak organised his followers into a community. He set up rules for congregational worship (sangat) involving collective recitation. He appointed one of his disciples, Angad, to succeed him as the preceptor (guru), and this practice was followed for nearly 200 years"