Which of the following phrases best explains what remote sensing can us do
study a place by making observations in person.
receive satellite signals to find an exact location.
study a place without actually having to be there.
or combined maps with data using software.

The right option is; Receive satellite signals to find an exact location.  

Remote sensing can help us to receive satellite signals to find an exact location. Remote sensing is a process in which satellite or aircraft based sensor technologies is used to detect or monitor the physical features of an object or an area at a distance. In this process, satellites or air craft gathers and transfer information (propagated signals) which are then observed and analyzed by people to know the characteristics of the targeted object or a location.