A scientist noticed that in acidic pond water some salamanders developed with curved spines. This was an example of a(n) А research o B inference. о С observation D hypothesis

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Kelli · Answer 1 · 2022-07-25T01:18:58+0000

Answer:

С observation

Step-by-step explanation:

This mode of investigation is an example of observation.

Observations are carried out using our senses and keen inquisitiveness. It can take place within a short period of time or an extended duration.

So; noticing the change in shape of the salamanders is making an observation.

Our sight, smell, taste e.tc are all observational tools.