On Graph B, at 0 hours, the graph will be _______. Then, the graph will _______ until 1 hour, when the submarine reaches its deepest point. At 1 hour, the height of Graph B will be _______.

To accurately respond to your question, I need more context about Graph B. However, I can guide you through the process of answering similar questions.

1. At 0 hours, you typically look for the y-value corresponding to the x-value of 0 on the graph. This tells you the initial height or position of the submarine.

2. Then, the graph will indicate whether the height is increasing or decreasing until it reaches its lowest point at 1 hour. You’ll find this by examining the trend of the graph.

3. At 1 hour, again, identify the y-value at x = 1 to determine the depth or height of the submarine at that time.

To provide a more specific response, please refer to the data or characteristics of Graph B. If you have further details, feel free to share!