Answer: We planned to take a trip to Asia in three years or less.
Step-by-step explanation:
The correct answer is ''We planned to take a trip to Asia in three years or less.'' The modifier in this case If we assume that the modifier is the trip that is going to happen, we will put next to it something that modifies in and that are those three years or less. Modifier must go next to something that it is modifying. Also, in this case, it can planning.