The answer is most likely 4 but I think you need a table or a marked hygrometer to work this out. You can't really work out humidity by the given temperatures. All you can know for sure is that there is a strong chance of rain because dew point is only 1 degree away. (I think what they want you to do is 29/30 x100)
Answer:
it is 1pm central time on tuesday
Good morning!
The most likely cause is the activity of the El Niño phenomenon, which causes changes in air masses and temperatures in the region, including Australia.
Hugs!