Which of the following is an effective SMART goal?

a. When given child-sized scissors, the student will cut out shapes.

b. The student will match pictures to the appropriate words by the end of the first reporting period.

c. The student will successfully participate in a turn-based game as measured by teacher observation.

d. When given the instruction to "build," the student will stack blocks for 4 of 5 opportunities as measured by teacher observation.