In Looking Over the Responses Given to the Items in Question

Multiple Choice

In looking over the responses given to the items in question 7, you notice that only one of your 2000 respondents had missing data on any of the items. That respondent scored 3 on the first 3 items but left item 4 blank. You should:​

A) ​give the respondent a total score of 9.
B) ​assign the middle value or the respondent's average value to item 4, giving that respondents a total score of 12.
C) ​exclude that respondent from your data analysis.
D) ​either exclude that respondent from your analysis or assign the middle or average value to item 4