Please help
She sat with her head thrown back upon the cushion of the chair, quite motionless, (6) except when a sob came up into her throat and shook her, as a child who has cried itself to sleep continues to sob in its dreams.


Read the passage underlined (6). There may be a mistake in punctuation, capitalization, or spelling. If you find a mistake, choose the answer that corrects the mistake. If there is no mistake, choose ‘Correct as is.’

A)
Correct as is.


B)
accept when a sob came up into her throat


C)
exsept when a sob came up into her throat


D)
expect when a sob came up into her throat