what 'nested alternative' means ? -Englsih beginner student-

[indralesmana]

'............. With the consideration of nested alternative structure of choices among private tutoring in different class-size and self-selection problem...... '

I completely have no clue what 'nested alternative' means. can someone help me please to make those sentence easier to understand? sorry for my bad grammar

[langsol]

Something that is nested is fully contained within something else of the same kind.  Think of this as an i and if-else statement.   The if-else statement allows a choice to be made between two possible alternatives. Sometimes a choice must be made between more than two possibilities.