Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to plan a class field trip [title] Talk with the principal of your school. [step] Ensure that you're able to plan a field trip or if what you want to do is possible. Explain the educational value and the relationship to the curriculum of the grade level (s) that will attend.

Ending1: [title] Decide what types of activities you'd like to do. [step] Normally, students are more interested in arts, music, sports, and dance. Ending2: [substeps] You will also want to clarify a date with the principal in order to ensure that the class trip does not conflict with any other mandatory school activities. Ask about emergency protocols while you're on the trip. Ending3: Be clear on what is expected of the students going to attend these classes. [substeps] Avoid vague verbiage like " right now " or " today will probably be the best time to go to class. Ending4: Be clear from the very start what you plan to do. [substeps] If you want to do field trips for free, let the teacher know so that it's possible for students to be there.

Answer format: ending1/ending2/ending3/ending4