There are many different steps to a scientific investigation. Assuming each of the students described below is in the process of one step of an investigation, which of the students is gathering data by observation?

After researching flight speeds, Jaron concludes that small birds fly faster than large birds.

Shawna counts how many birds fly into the tree in her front yard each hour.

Oliver sits at the lunchroom door and keeps track of the number of students he sees buying pizza for lunch at his school for one month.

Raymond hypothesizes that tall students are more likely to buy pizza for lunch than are short students.

Allison mixes water and sodium chloride over the stove until the salt dissolves, then sets the saltwater outside until the water has all evaporated.

II and III only
I and III only
I, II, and III only
III only

Question

There are many different steps to a scientific investigation. Assuming each of the students described below is in the process of one step of an investigation, which of the students is gathering data by observation?

After researching flight speeds, Jaron concludes that small birds fly faster than large birds.

Shawna counts how many birds fly into the tree in her front yard each hour.

Oliver sits at the lunchroom door and keeps track of the number of students he sees buying pizza for lunch at his school for one month.

Raymond hypothesizes that tall students are more likely to buy pizza for lunch than are short students.

Allison mixes water and sodium chloride over the stove until the salt dissolves, then sets the saltwater outside until the water has all evaporated.

II and III only
    I and III only
    I, II, and III only
    III only

anonymous · Answer

II and III Only.  I is research.  IIII is just assumption.  V is experimentation.