Question

After reading a book about parrots, Tani wants to learn more about them. Which question could be answered through scientific investigation?

Which bird’s eggs taste the best?
What substances make up an eggshell?
Which birds have the most beautiful feathers?
Which type of bird makes the best pet in an apartment?

Answer 1

I' m going to say B. WHAT SUBSTANCES MAKE UP AN EGGSHELL?

You have to look at keywords here, and the only one that refers to scientific research would be Substance.

Answer 2

Answer: What substances make up an eggshell?

Explanation: A scientific investigation involves step by step scientific method to find out an objective answer to a question. Taste of bird's eggs, beauty of feathers and best pet- These questions would have subjective answers i.e. it would depend on person to person.

The composition of an eggshell can be found out by carrying out a scientific investigation. The composition of an eggshell is not subjective to the investigator.