Directions : Read the poem given below and answer the questions that follow by selectiong the most appropriate option
The sun descending in the west,
The evening star does shine;
The birds are silent in their nest,
And I must seek for mine.
The moon, like a flower,
In heaven's high bower,
With silent delight
Sits and smiles on the night.
Farewell, green fields and happy groves,
Where flocks have took delight,
Where lambs have nibbled, silent moves
The feet of angels bright;
Unseen they pour blessing,
And joy without ceasing,
On each bud and blossom,
And each sleeping bosom.
They look in every thoughtless nest,
Where birds are covered warm;
They visit caves of evey beast,
To keep them all from harm.
If they see and weeping
That should have been sleeping,
They pour sleep on their head,
And sit down by their bed.
Question : The figure, if speech use in the line 'In heaven' s high bower' is