Which statement is considered specific enough to form a testable hypothesis based on variable identification?

Answer

A decrease in barometric pressure will precede rainfall within twelve hours in this specific geographical area.

Vague statements cannot be tested effectively. A specific statement allows for the definition of variables (barometric pressure change as IV, rainfall timing as DV) around which a test can be designed.

Which statement is considered specific enough to form a testable hypothesis based on variable identification?
Definitionsciencetheorymethodhypothesis