abbreviation for a full name like "Marina Dizon Santiago," the goal is to use a simplified form that still represents the full name. Typically, this involves using the initial letters of each component of the name. In this case, "Marina" is the first name, "Dizon" is the middle name, and "Santiago" is the last name. One common approach is to use the initial of the first name, the initial of the middle name, and the full last name. This results in "M. Dizon Santiago," which is a more compact representation. Alternatively, for even further simplification, you could use just the initials of the first and middle names followed by the last name, creating "M. D. Santiago." Another method is to use the first and last names only, dropping the middle name entirely, which would be "Marina Santiago." Each approach depends on how much detail you need to retain and the context in which the abbreviation will be used.