Answer:
Perceivable and measurable
Explanation: For a scientific explanation to be testable it must be Perceived and measured.
Perceivable describes a person's view of a certain situations or scientific explanation, perception helps to test a scientific explanation through different views.
Measurability- for a scientific explanation to be testable,it must be measurable,it must be quantified in terms of numbers. The measurability of a scientific explanation gives credibility to the scientific explanation and helps its acceptance.