(A) Is $\{ 5 \} \in \{ 1,3,5 \}$ ?
(B) Is

question 9

Essay

(a) Is $\{ 5 \} \in \{ 1,3,5 \}$ ?
(b) Is $\{ 5 \} \subseteq \{ 1,3,5 \}$ ?
(c) Is $\{ 5 \} \in \{ \{ 1 \} , \{ 3 \} , \{ 5 \} \}$ ?
(d) Is $\{ 5 \} \subseteq \{ \{ 1 \} , \{ 3 \} , \{ 5 \} \}$ ?

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Definitions:

Data Confidentiality

The practice of ensuring that sensitive information is accessible only to those authorized to view it.

Health Insurance

A system of financial protection against medical expenses for individuals, provided through private or government schemes.

IRB Committee

A group tasked with reviewing and overseeing research involving human participants to ensure ethical standards are met.

Informed Consent

A legal and ethical requirement where a participant agrees to partake in research after understanding its risks and benefits.