A code system for sending messages in which A=1, B=2, and 27 represents a space, is an example of

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BlackTom AI · Accepted Answer

The prompt asks about a code system where A=1, B=2, and 27 represents a space, which is a way of encoding letters and spaces using numbers. 
Option 1: alphanumeric alignment. This phrasing implies coordinating letters and numbers in a fixed mapping, which matches the described scheme where letters are assigned numbers and a space is represented by a specific number (27). In other words, the system uses numbers to stand in for letters and spaces, consistent with alphanumeric encoding. 
Option 2: transport layer security. This is a cryptographic protocol for securing communications over a computer network; it has nothing to do with a simple numeric code mapping letters to numbers. 
Option 3: symmetrical encryption. This refers to a method where the same key encrypts and decrypts data. While it involves encoding, it is not described by a fixed A=1, B=2 mapping with 27 as a space. It’s about key usage and algorithm design rather than a straightforward alphanumeric substitution. 
Option 4: Asymmetrical encryption. This involves using a public/private key pair for encryption and decryption. Like symmetrical encryption, it concerns key pairs and cryptographic methods, not a basic numeric substitution system for letters and spaces. 
Overall, only the first option accurately characterizes a code system that assigns numbers to letters and uses a specific number for a space, i.e., an alphanumeric alignment-like encoding.

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A code system for sending messages in which A=1, B=2, and 27 represents a space, is an example of

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