What is the meaning of 'embark' when used as a verb?

The term 'embark' when used as a verb primarily means to go aboard a vessel, aircraft, or some mode of transportation and to start a journey or an undertaking. This definition captures the essence of initiating a process or beginning a new endeavor. It is often used in contexts related to travel, exploration, or undertaking new projects, highlighting the act of setting out on a significant adventure or undertaking.

The other interpretations do not align with this definition. For instance, withdrawing from a situation implies a retreat rather than starting something new. Making a choice often pertains to decision-making rather than the physical action of starting a journey or project. Investing in a new company relates to financial engagement rather than the notion of embarking on a journey or initiative. Therefore, the understanding of 'embark' as starting something, particularly in the context of beginning a journey or significant endeavor, reinforces why this option is the correct answer.