Final answer:
The correct answer to the question is a 'ampule,' which is a single-use glass container that is broken at the neck to access the contents.
Step-by-step explanation:
A small glass container that must be broken at the neck to obtain the solution is called a ampule. This is a sealed glass capsule that often contains a sterile solution or a powder to be dissolved in a liquid for injection. Unlike vials, which have a rubber stopper and can be accessed multiple times with a syringe, ampules are single-use and must be broken at the neck to access the contents. It is important to handle ampules with care to avoid injury or contamination of the contents. Using an alcohol swab to clean the neck and covering it with a small gauze before breaking can help prevent cuts and keep glass shards from falling into the solution.