Answer:
The correct answer is - test tube clamp or test tube tongs.
Explanation:
Test tube clamps are also known as test tube tong that is used to carry the test tube when it should not be touch or if it contains chemicals that can harm researchers. It also helps to hold the hot test tube during an experiment.
Test tubes are the glassware that use to carry the small quantity of substances or chemicals for testing or experimenting. These tubes can behold by the test tube clamps or tongs.
Thus, the correct answer is - test tube clamp or test tube tongs.