A word given in bold is followed by I, II and III, each

Solution

(c) However:  used to introduce a statement that contrasts with or seems to contradict something that has been said previously. The first statement in pair I mentions about radio telemetry technology used for getting real-time information about tiger’s movement. In contrast, the second statement is about techniques used to capture non-collared tigers. This presents a contrast and ‘however’ can be used to connect the sentences. The first statement in pair II mentions about the lax attitude of officials and the second sentence talks about the disinterest of the officials of working in the fields. So, there is no contradiction between the two statements. Hence, ‘however’ cannot be used. The first statement in pair III mentions about how big companies use huge amounts of data to build AI-powered tools to devise automatic speech recognition systems. The second statement says that as the data is used by only few tech giants keeping privacy can be difficult. This presents a contrast and ‘however’ can be used to connect the sentences. Hence, option C is the correct choice.