You're interested in drawing some conclusions about the political attitudes of college undergraduates. Your objective is to administer a survey to a representative sample of students. You survey a large group of seniors who are attending a senior-only event. The flaw in this approach is:

answer: slight chance that it will happen

step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.