Question

compare the student text with the source.
source: eoin ocarroll, \marie curie: why her papers are still radioactive.\ published in christian science monitor, 2011:

along with her husband and collaborator, pierre, marie curie lived her life awash in ionizing radiation. she would carry bottles of the polonium and radium in the pocket of her coat and store them in her desk drawer.

student text:

physicist marie curie performed research on radium and polonium and lived her life awash in ionizing radiation.

is the student text plagiarized?

no, it is not plagiarized.

yes, because it fails to use quotation marks.

yes, because it fails to use quotation marks and fails to cite the source.

Explanation:

The student text uses the exact phrase "lived her life awash in ionizing radiation"[LLM SSE On Failure]

Answer:

Yes, because it fails to use quotation marks and fails to cite the source.