21. How does Clare feel about the students in her Year 12 science class?

• A.

  worried that they are not making progress

• B.

  challenged by their poor behaviour in class

• C.

  frustrated at their lack of interest in the subject

22. How does Jake react to Clare's suggestion about an experiment based on children's diet?

• A.

  He is concerned that the results might not be meaningful.

• B.

  He feels some of the data might be difficult to obtain.

• C.

  He suspects that the conclusions might be upsetting.

23. What problem do they agree may be involved in an experiment involving animals?

• A.

  Any results may not apply to humans.

• B.

  It may be complicated to get permission.

• C.

  Students may not be happy about animal experiments.

24. What question do they decide the experiment should address?

• A.

  Are mice capable of controlling their food intake?

• B.

  Does an increase in sugar lead to health problems?

• C.

  How much do supplements of different kinds affect health?

25. Clare might also consider doing another experiment involving

• A.

  other types of food supplement.

• B.

  different geneticstrains of mice.

• C.

  varying amounts of exercise.