Interneurons: A) link neurons to neurons B) carry only sensory impulses D) carry only motor impulses D) only connect motor neurons to other motor neurons E) are found between neurons and their effectors D D.

Let's analyze the options provided regarding interneurons: 1. **A) link neurons to neurons**: This statement is true. Interneurons are responsible for connecting various neurons within the central nervous system (CNS), facilitating communication between sensory and motor neurons. 2. **B) carry only sensory impulses**: This statement is false. Interneurons do not exclusively carry sensory impulses; they can also process and relay information from sensory neurons to motor neurons. 3. **C) carry only motor impulses**: This statement is also false. Interneurons are not limited to carrying motor impulses; they play a role in integrating and processing information. 4. **D) only connect motor neurons to other motor neurons**: This statement is false. Interneurons connect various types of neurons, including sensory and motor neurons, not just motor neurons to other motor neurons. 5. **E) are found between neurons and their effectors**: This statement is false. Interneurons are primarily located within the CNS and do not directly connect to effectors (muscles or glands). Instead, motor neurons connect to effectors. Based on this analysis, the correct answer is: **A) link neurons to neurons**. Interneurons play a crucial role in the nervous system by connecting different types of neurons and facilitating communication between them.