<p><span style="font-size: 13.008px;">The correct answer is (C) "for". </span></p><p><span style="font-size: 13.008px;">In this sentence, we are talking about the schedule or arrangement of the delivery. When we use the verb "schedule", we typically use the preposition "for" to indicate the purpose or intended time of the event. In this case, the purchase is scheduled "for" delivery on October 14. </span></p><p><span style="font-size: 13.008px;">(A) "to" is incorrect because it does not accurately convey the intended meaning. The preposition "to" typically indicates movement towards a destination, but in this sentence, we are discussing the timing of the delivery rather than the direction of movement. </span></p><p><span style="font-size: 13.008px;">(B) "on" is incorrect because it does not convey the purpose or arrangement of the delivery. The preposition "on" is commonly used to indicate a specific day or time, but it does not indicate the scheduling or purpose of the event. </span></p><p><span style="font-size: 13.008px;">(D) "at" is incorrect because it does not convey the purpose or arrangement of the delivery. The preposition "at" is commonly used to indicate a specific location or time, but it does not indicate the scheduling or purpose of the event. </span></p>