Answer is B. Air temperature rises and air molecules move faster.
Answer: Test case
Explanation:
The document that defines the software testing approach in order to achieve testing objective is referred to as the test case.
It should be noted that the test case is a document, that consist of a set of test data, the preconditions, and the expected results as well as the postconditions, which are developed for the test scenario so as to meet the testing objective.
Researchers found a total of 138 volcanoes in the West Antarctic Ice Sheet overlying the West Antarctic Rift System, 91 of which had never before been identified. Basically they have never seen those types of volcanoes before.