Identify the correct fraction represented by the shaded portions in each diagram.
Circle the correct fraction from the given choices. Four problems with shapes divided into parts and fractions listed. Problem 1: Circle divided into 8 parts, 7 shaded, fraction 7/8 circled. Problem 2: Rectangle divided into 2 parts, 1 shaded, fraction 1/2 circled. Problem 3: Rectangle divided into 3 parts, 2 shaded, fraction 2/3 circled. Problem 4: Circle divided into 8 parts, 6 shaded, fraction 6/8 circled.