I only photographed my textbook but this page gives a lot of information about your question
It means to guess/round a number.
Based on the model above, the location will experience rain shower.
The solid circle above the inverted triangle means rain and the inverted triangle means shower. The bigger circle in the middle indicates cloud cover and in the case presented, the location will experience 50% cloud cover. The symbol coming out of the bigger circle indicates the wind speed and direction so the wind speed will be 12-20 mph.
I believe it would be either A or D sorry for not specifying;(
