Explanation:

- Option 1, a: "The resolution of one high-profile case" - This part of the sentence correctly introduces the subject and is grammatically correct.

- Option 2, b: "should not deflect" - The phrase correctly connects the subject to its action and is properly constructed.

- Option 3, c: "attention from the many" - This part clarifies from what the attention should not be deflected and is grammatically sound.

- Option 4, d: "challenges still plaguing" - This phrase effectively describes the challenges that exist and is grammatically accurate.

- Option 5: The sentence as a whole is complete and free of errors.

All parts of the sentence are correctly structured, so:

Option 5, no error, is correct.