Pick the word for the following expression: A professional rider in horse races?

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E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) p. 15384-15386
E6 Medicine Harrison 22e Part 2 p. 2024-2026
Practise the full HSSC Staff Nurse - 2015
Attempt every question from this paper in a timed mock, then review the full solution for each one.