Final answer:
The common elements of selling dividends, trading mutual fund shares, and making blanket recommendations all pertain to the financial investment practices within the securities industry, with a focus on investment diversification for risk management.
Step-by-step explanation:
Selling dividends, trading mutual fund shares, and making blanket recommendations all involve an important practice within the securities industry known as financial investment activities. These activities relate to investment diversification, which means spreading investments across a variety of securities to manage risk.
Traditional financial advice suggests that diversification can protect investors from the volatility associated with investing in a single company. By involving oneself in the buying and selling of dividends and mutual fund shares, or adhering to broad investment recommendations, one is essentially participating in this risk management strategy.
Moreover, the aspect of selling dividends pertains to the distribution of a portion of a company's earnings to its shareholders. Trading mutual fund shares involves buying and selling stakes in a portfolio that includes a mix of assets, and making blanket recommendations often refers to generic investment advice provided without consideration of an individual's specific financial situation.