The word "reserved" is the most suitable choice to fill in the blank because it indicates a lack of outward expression or enthusiasm. If someone becomes reserved in a conversation about a certain topic, it means they become more restrained, quiet, or less willing to openly share their thoughts or feelings. In the given context, it suggests that the person's demeanor changed to a more restrained or withdrawn state when discussing her father.

1. In technical language, the drone is an unmanned aircraft. These drones are formally known as Unmanned Aerial Vehicles (UAVs) or Unmanned Aircraft Systems (UASs). Drones are flying robots that are controlled via remote or fly automatically through software-controlled flight plans, which are embedded systems that work with the help of sensors and GPS.

Answer: C) Bengaluru Explanation: Bengaluru city is known as the Electronic City of India. Because Electronic City is an IT hub in Anekal taluk of Bengaluru, Karnataka, India. It is one of India's largest electronic industrial parks in 3 phases i.e, in Konappana Agrahara and Doddathogur villages, Bengaluru.