There drew he forth the brand Excalibur, And o’er him, drawing it, the winter moon, Brightening the skirts of a long cloud, ran forth And sparkled keen with frost against the hilt: For all the haft twinkled with diamond sparks, Myriads of topaz-lights, and jacinth-work Of subtlest jewellery. He gazed so long That both his eyes were dazzled, as he stood, This way and that dividing the swift mind, In act to throw: but at the last it seem’d Better to leave Excalibur conceal’d –"Morte d’Arthur,” Alfred, Lord Tennyson What does the imagery identified in this passage help readers understand? why Arthur would want to get rid of the sword why the Lady of the Lake gave up the sword why Bedivere would want to keep the sword why Bedivere would want to throw the sword