A diagonal boundary seems to divide at least layer F and layer B into two sections. Predict the event that formed this boundary, and predict whether the event occurred before or after the formation of the layers around it. Explain your reasoning.

If you were a casual recreational hiker with young children, which of the following trails would be least strenuous for a leisurely family outing? a. merced lake trail b. mirror lake loop trail. c. tenaya lake and tuolumne meadows trail d. el capitan trail