Three cubes are adjacent to each other and form a horizontal row. The cube farthest to the left in the row has two cubes on top of it and another cube adjacent to and in front of it. The cube farthest to the right in the row has a cube on top of it. The bottom of the image has the word front. The right side of the image has the word right.
1. How many cubes are in the base of the model?
• 3
• 4
• 7
• 2