contestada

The results of an investigation are usually more reliable if
A.
it is done outside.
B.
it is done only once.
C.
it is done using a ruler.
D.
it is done more than once.

Respuesta :

It is done more than once. D
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Answer:

A test will be reliable when it gives the same repeated result under the same conditions.

D. it is done more than once

Explanation:

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