Quick response time sensor will have small settling time Large settling time both a and b none of these

It seems like you're asking about the relationship between response time in sensors and settling time. Here's a step-by-step explanation:

1. Response Time: This is the time a sensor takes to react to a change in the environment. A quick response time means the sensor can quickly detect and respond to changes.

2. Settling Time: This is the time a sensor takes to stabilize its output after a change has been detected. A small settling time means the sensor can quickly stabilize its output after detecting a change.

3. Relationship: A sensor with a quick response time will generally have a small settling time. This is because the faster the sensor can detect changes, the faster it can stabilize its output. Therefore, the answer is both a and b.