Concept:
Public health is defined as:
“The science and art of preventing disease, prolonging life, and promoting health through organized community efforts.”
Thus, the important elements included in public health are:
• Preventing disease
• Prolonging life
• Promoting health
Step 1: Analyze statement A.
Prolonging life is one of the core objectives of public health.
Hence, A is correct.
Step 2: Analyze statement B.
Prevention of financial frauds is unrelated to the definition of public health.
Hence, B is incorrect.
Step 3: Analyze statement C.
Preventing disease is a major component of public health.
Hence, C is correct.
Step 4: Analyze statement D.
Promoting health is included in the definition of public health.
Hence, D is correct.
Step 5: Analyze statement E.
Employment opportunity is a socioeconomic factor affecting health but is not part of the public health definition.
Hence, E is incorrect.
Step 6: Select the correct option.
The correct combination is:
\[
A, C, D \text{ only}
\]
Therefore, the correct answer is:
\[
\boxed{(D)\ A, C, D\ \text{only}}
\]