False results, wrong observations, etc, etc..
Con·cen·tra·tion
/ˌkänsənˈtrāSH(ə)n/
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noun
1.
the action or power of focusing one's attention or mental effort.
"frowning in concentration"
Each choice show an element of the sample space for shooting 2 free throws in basketball.
A. XX - the 2 free throws made the basket
B. OO - the 2 free throws missed the basket
C. XO - 1st free throw made the basket, 2nd free throw missed it.
D. OX - 1st free throw missed the basket, 2nd free throw made it.
The answer is Starch. Hope this helped!