What is a characteristic of a synarthrodial joint?

A synarthrodial joint is characterized by a structure that does not allow for significant movement between the bones it connects. This type of joint is typically united by dense connective tissue or fibrous cartilage, which makes option B accurate. The nature of synarthrodial joints is such that they provide stability and support, which is crucial in areas of the body where motion is not necessary or desirable.

In contrast, synarthrodial joints are not defined by having an articular cavity for movement, which would indicate a level of mobility more characteristic of other joint types. Additionally, they do not permit a wide range of motion; instead, they limit movement to promote strength and protection in certain body regions. Lastly, their definition excludes the presence of synovial fluid, as true synovial joints allow for greater movements and typically have such fluid to facilitate that mobility. Thus, the design of synarthrodial joints is precisely for stability rather than movement, aligning with the features described in option B.