Answer: a) amphiarthroses
Explanation: Amphiarthroses are types of joints that allow limited movement between the bones. These joints are primarily found in locations such as the spine, where they provide stability while still permitting some flexibility. In contrast, synarthroses are immovable joints, while diarthroses and synovial joints refer to freely movable joints that are typically more flexible and dynamic. Therefore, for articulations that permit only slight degrees of movement, amphiarthroses is the correct choice.