Which of the following is a problem associated with straw polls? The automated polling system used in straw polls displays inaccurate data about the opinions of the people surveyed. Straw polls consider a sample poll of only 300 to 600 people. Opinions expressed in straw polls represent an atypical subgroup of the population. Straw polls lack the effectiveness and efficiency of Internet polling.

1. **Identify the claim:** Straw polls are unofficial polls that often sample only a small or non-representative group of people. 2. **Examine each option:** - **Option A:** "The automated polling system used in straw polls displays inaccurate data about the opinions of the people surveyed." This option discusses an automated polling system, which is not the key issue usually associated with straw polls. - **Option B:** "Straw polls consider a sample poll of only 300 to 600 people." While it is true that a small sample size can be an issue in polls, the main problem with straw polls is less about exact numbers and more about the representativeness of the sample. - **Option C:** "Opinions expressed in straw polls represent an atypical subgroup of the population." This option directly addresses the primary concern: the opinions collected are not representative of the whole population. This is the central problem with using straw polls as a measure of public opinion. - **Option D:** "Straw polls lack the effectiveness and efficiency of Internet polling." This option compares straw polls with Internet polling, which is not the inherent problem of straw polls; it is more about their representativeness and reliability. 3. **Conclusion:** The fundamental problem with straw polls is that the opinions expressed represent an atypical subgroup of the population, leading to results that are not generalizable to the broader public. Thus, the correct answer is: \( \textbf{Opinions expressed in straw polls represent an atypical subgroup of the population.} \)