Answer :
Final answer:
The section detailing data collection for participants who withdraw from a study is crucial and falls under the 'Selection and Withdrawal of Participants' section of the research protocol.
Explanation:
The section of the research protocol that should describe the type and timing of data to be collected for participants who withdraw from the study is Selection and Withdrawal of Participants. This section specifies the procedures and guidelines for participants who choose to discontinue their involvement in the study, including how their data will be handled and at what point their data will be collected.
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