Who was Wordsworth's co-writer for Lyrical Ballads?

The wet-plate collodion photographic process was introduced by

a) Frederick Archer. b) William Henry Fox Talbot. c) Julia Margaret Cameron. d) Walker Evans.

What is the name for the cue that dancers give to the orchestra? What does it signal in

Gending Pengalang Bebarongan?

What will be an ideal response?