Final answer:
The light blue tube is the one typically used as an anticoagulant, as it contains sodium citrate to prevent clotting for coagulation studies. the correct answer is b) Light Blue.
Step-by-step explanation:
When referring to trusted internet resources on blood sample collection, the tube that is typically used as anticoagulant is Light Blue. The light blue tube contains sodium citrate, which acts as an anticoagulant by binding calcium in the blood and thus preventing blood clotting. This makes the blood sample suitable for coagulation studies. The other options, such as Yellow/Blood Culture Bottles, are typically for microbiology specimens, and Red tubes usually do not contain an anticoagulant and are used for serum chemistry tests. Hence, the correct answer is b) Light Blue.