Answer:
sensorimotor, preoperational, concrete operational, formal operational.
Explanation:
Cognitive development can be defined as the development of thought processes, skills, knowledge and problem-solving abilities from infancy through adulthood.
Jean Piaget was a developmental biologist and psychologist who worked extensively on cognitive development in infants and teenagers; these are judgement, knowledge and thoughts.
Jean Piaget's stages of cognitive development in order are;
I. Sensorimotor: this is between 0 - 2 years (18 - 24 months).
II. Preoperational: this is age 2 - 7 years.
III. Concrete operational: this is age 7 through age 11.
IV. Formal operational: this is from adolescence (11 years) through adulthood.
HIV or Human Immunodeficiency Virus is a viral infection, which directly attacks Leukocytes (white blood cells). Leukocytes are the cells responsible for fighting infections that break past the skin. If the infection is not controlled it can cause a range of disorder's which form a syndrome called AIDS or Acquired Immunodeficiency Disorder Syndrome. When this happen common infection for such thing as a common cold can turn lethal as the body is unable to fight pathogen's effectively.
I think the smallest but impactful act is to just support local farmer's markets.