Which of the following statements is true? Choose all that apply.
No observations must be used in scientific experiments.
Direct observations are used in experiments.
Indirect observations are used in experiments.
Neither direct nor indirect observations can answer science questions.

Question

Which of the following statements is true? Choose all that apply.
        No observations must be used in scientific experiments. 
        Direct observations are used in experiments. 
        Indirect observations are used in experiments. 
        Neither direct nor indirect observations can answer science questions.

anonymous · Answer

Direct observation is operationally defined as an observation made by using your senses as opposed to indirect observation made by using instruments and measuring device, 

So I'd say B, and C?  But I'm not 100% sure.

jjuden · Answer

ok thank you

anonymous · Answer

Your welcome. Glad I could help :)