Low-end IoT (Internet of Things) devices are cheap commodity items: addressing security would add to the cost. This class of items is proliferating with new applications; many home appliances, thermostats, security and monitoring devices and personal convenience devices are part of the IoT. So are fitness trackers, certain medical implants and computer-like devices in automobiles. The IoT is expected to expand exponentially— but new security challenges are daunting.

Which one of the following statements is the most logical and rational inference that can be made from the above passage?

The correct option is "As we go digital, we must recognise the huge threat to Internet security from some IoT devices."

Step-by-Step Explanation:

1. Analyze the passage details:
The passage states that low-end IoT (Internet of Things) devices are cheap commodity items where addressing security issues would increase costs. Consequently, these insecure or minimally secured devices are proliferating rapidly across households (thermostats, home appliances, security systems) and personal lives (fitness trackers, medical implants, automotive systems). The text explicitly warns that while the IoT ecosystem is expanding exponentially, the resulting "new security challenges are daunting."

2. Evaluate the connection to the correct option:
Because low-end, cheap IoT devices are spreading fast without adequate security measures, they pose a significant vulnerability. As society becomes more digitalized and interconnected through these devices, it becomes critical to recognize that these specific low-end IoT devices present a major threat to overall internet security. This directly aligns with the inference that "we must recognise the huge threat to Internet security from some IoT devices."

3. Why other options are incorrect:
- The options concerning "India" make geographical assumptions not supported or mentioned anywhere in the passage.
- The option stating "Life becomes more comfortable..." focuses on comfort, whereas the passage primarily highlights the daunting security challenges and cost trade-offs of low-end IoT devices.