Changing the pendulum design after the first trial was an example of to solve the problem presented by the teacher. a) designing the model b) evaluating the model c) identifying the problem d) doing research on the problem

evaluating the desing

Explanation:

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.