Which of thr following id example of Physical and device models ?Select one:a.GOMSb.BNFc.TAGd.KLMClear my choice

The question seems to be asking for an example of physical and device models from the given options. Here are the options explained:

a. GOMS: This is a model of human-computer interaction and stands for Goals, Operators, Methods, and Selection rules. It's a psychological representation of user tasks.

b. BNF: This stands for Backus-Naur Form, a notation technique for context-free grammars, often used to describe the syntax of languages used in computing.

c. TAG: This could refer to a variety of things in computing, but without more context, it's hard to say exactly what it refers to in this case.

d. KLM: This stands for Keystroke-Level Model, a hard science approach to human-computer interaction, aiming to provide a practical technique for estimating the time it takes for a user to perform tasks without errors.

From these options, the Keystroke-Level Model (KLM) is the one that fits best as an example of a physical and device model. It's a model that describes the physical actions a user must take to interact with a device. So, the answer is:

d. KLM