which biological factor may be involved in the development of mental illness? \n○ infections\n○ left…

which biological factor may be involved in the development of mental illness? \n○ infections\n○ left - handedness\n○ height - weight ratio\n○ birth order in a family
Answer
Brief Explanations:
To determine the biological factor in mental illness development, we analyze each option:
- Infections: Some infections (e.g., certain viral or bacterial infections) can impact the brain and contribute to mental health issues, making this a valid biological factor.
- Left - handedness: There's no established direct link to mental illness development as a biological factor for causation.
- Height - weight ratio: Primarily related to physical health (e.g., obesity - related issues) and not a direct biological factor in mental illness development.
- Birth order in a family: This is a social - psychological factor related to family dynamics, not a biological factor.
Answer:
A. infections