Brian and his classmates conducted an experiment on what objects are attracted to an electrically charged balloon. Their teacher instructed them to write down their procedure. What is the purpose of writing down the procedure? (A) The experiment can be changed by others to investigate a new question.

(B) The exact experiment can be repeated by others, and the results can be compared.

(C) The procedures for the experiment can be changed for another experiment.

(D) The procedures for the experiment can be tested for accuracy.

b

Explanation:

other people can do the exact same experiment and compare it to others

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.