Solution:(d) The government will install Wi-Fi hotspots in remote areas by 2022.(Correct)(a) Wi-Fi hotspots will install in remote areas by 2022 by the government. (Incorrect Subject, Object and verb form)
(b) Remote areas will install Wi-Fi hotspots by the government by 2022, (Incorrect Subject, Object and verb form)
(c) The government will install remote areas and hotspots by 2022. (Meaning has changed)