what is the earning strategy in investing? a. invest in areas you know well. b. invest in a variety of etfs…

what is the earning strategy in investing? a. invest in areas you know well. b. invest in a variety of etfs. c invest in companies with high earnings announcements coming up. d. predict future movements of an asset using past data.
Answer
Brief Explanations:
Investing in areas one knows well can reduce information - asymmetry and make more informed decisions. Investing in a variety of ETFs is diversification, not specifically an 'earning' strategy focused on in - depth knowledge. Investing in companies with upcoming high earnings announcements is speculative as the actual outcome is uncertain. Predicting future movements using past data has limitations due to market changes.
Answer:
A. Invest in areas you know well.