The mood of the speaker in 'Break, Break, Break' is—

Tennyson's poem is an elegy mourning the death of his friend Arthur Hallam. Lines like 'But O for the touch of a vanish'd hand, / And the sound of a voice that is still!' and 'But the tender grace of a day that is dead / Will never come back to me' convey profound grief and somber reflection. The mood is heavy with sorrow and loss, making (3) somber and grieved correct.