Final answer:
The excerpts all pertain to English literature, featuring themes of communication and secrecy with secret agents and messengers involved in the delivery of messages or packages. These represent a common narrative device in literature which often propels the story forward.
Step-by-step explanation:
The subject of the question seems to be related to English, particularly to literature or reading comprehensions involving scenarios of secret agents, messengers, and the delivery of packages or letters. These instances are likely drawn from various narrative texts, emphasizing the thematic elements of secrecy, communication, and conveyance that are often found in English literature.
In the provided references, senders rely on intermediaries to deliver messages or packages to specific destinations. Such situations are represented in different contexts, showcasing how the transfer of information is a pivotal plot device in literature, which often leads to the development or resolution of a narrative.
The common thread among the scenarios is the act of sending or receiving objects or information, which plays a vital role in the story's progression. Understanding these transactions can enrich the analysis and comprehension of the plot, as well as the setting and characters' motivations.