Electricity sometimes is used for heating buildings.
Sometimes, in a cold climate it is necessary to use heat, but use only slow heat.
Electricity helps humans live in cold climates.
What does electricity help humans do?

(a) increases a body's strength
(b) Time travel
(c) Remember things
(d) magic
(e) lowered energy cost
(f) Relieve pain
(g) move to different locations
(h) Live in cold climates