The answer is the first one (A): the mandible and the cranium.
Explanation for each option:
A. The mandible and the cranium - Correct. The mandible (lower jaw) is connected to the cranium (skull) via the temporomandibular joint (TMJ), which is a synovial joint, not a suture. Sutures are fibrous joints found between the bones of the skull, but the mandible is an exception as it is connected by a movable joint.
B. The zygomatic bone and the maxillary bone - Incorrect. These bones are connected by a suture, specifically the zygomaticomaxillary suture.
C. The occipital bone and the parietal bone - Incorrect. These bones are connected by the lambdoid suture.
D. The vomer and the zygomatic bone - Incorrect. While these bones are not directly connected, the vomer is connected to other bones in the skull via sutures.
E. All answers have sutures - Incorrect. As explained, the mandible is connected to the cranium by a synovial joint, not a suture.
Summary:
The mandible and the cranium are connected by a synovial joint, not a suture, making option A the correct answer.