The correct answer is C. Portable computing tools
Step-by-step explanation:
In technology and related areas, a smart device refers to an electronic device that can complete different tasks through programs or applications, this includes saving data, processing information, among others; due to this, smart devices are considered computer tools. Besides this, smart devices can connect to other devices or networks; and can be "mobile" if they are portable; examples of this include smartphones, tablets or smart watches. This implies a smart mobile device integrates a computing system into a portable device, and therefore they can be defined as "portable computing tools".