Answer: 5 Frames
Explanation: When the data packet is transferred from sender to receiver , it forms frame.If there are five networks through which the data packets travels then there are five frames as well because packet moves one by one from every frame.
Other options are incorrect because the number of frame in network from source to destination will be equal to the number of networks .So, it cannot be 1 ,2 and 6 frames.Thus the correct option is 5 frames.