Question

frame a wh questions to get the underline part of the answer
1.they had to watch over the protected nest to prevent thieves​

Answer 1

where is the underline?? ur question is incomplete

Answer 2

you have not underlined the part....

but still, I think the correct answer will be. :

1. what they had to watch over to prevent thieves ?(if protected nest is underlined)

2. Why they had to watch over the protected nest?

(if to prevent thieves is underlined)