Answer:
b) hyperspace arsenal
Step-by-step explanation:
The trope used in J.K. Rowling's Harry Potter series for items such as the wizards' school trunks, family tents, and Hermione's extendable bag is the "hyperspace arsenal."
The hyperspace arsenal is a trope used in fiction where characters are able to carry an unusually large number of items or weapons in a small space without any visible indication of the weight or bulk. This trope is often used in fantasy and science fiction, where characters possess advanced technology or magical abilities that allow them to store an extraordinary amount of equipment in a small space.
In the Harry Potter series, the wizards' school trunks, family tents, and Hermione's extendable bag are all examples of hyperspace arsenals. The school trunks are able to hold an entire year's worth of supplies, including books, robes, and other necessary items, without appearing to be overly large or heavy. The family tent used by the Weasley family is another example of a hyperspace arsenal, as it is able to comfortably accommodate an entire family while appearing to be no larger than a regular camping tent. Finally, Hermione's extendable bag is also a hyperspace arsenal, as it is able to hold an enormous amount of items without appearing to be overly bulky or heavy.
Overall, the use of the hyperspace arsenal trope in the Harry Potter series allows for convenient and efficient storytelling by allowing characters to carry all necessary equipment without having to worry about logistics or practicality.