Which observation indicates that rain is approaching?
a. falling barometer, increased cloudiness, rising temperatures.
b. rising barometer, decreased cloudiness, falling temperatures
c. rising barometer, increased cloudiness, rising temperatures
d. falling barometer, increased cloudiness, falling temperatures.

Respuesta :

 Falling barometer, increased cloudiness, rising temperatures .

The answer is A. A falling barometer means a decrease in air pressure. This is caused by an increase in the local temperatures that warm the air and make it less dense. Clouds start forming when the warm humid air starts to rise and cool. The water moisture turns into water droplets.