Read the following passage carefully before you choose your answer.

The following is an excerpt from a research study titled, "Determinants of refugee naturalization in the United States."

(1) The United States oversees the world's most amazing refugee resettlement program. (2) However, it's difficult to determine whether or not refugees successfully integrate into American society after their arrival.

(3) We address this gap by drawing on linked administrative data to directly measure a long-term integration outcome: naturalization rates. (4) Assessing the full population of refugees resettled between 2000 and 2010, we find that refugees naturalize at high rates: 66% achieved citizenship by 2015. (5) This rate is substantially higher than among other immigrants who became eligible for citizenship during the same period. (6) We also find significant heterogeneity in naturalization rates. (7) Consistent with the literature on immigration more generally, sociodemographic characteristics condition the likelihood of naturalization. (8) Women, refugees with longer residency, and those with higher education levels are more likely to obtain citizenship. (9) National origins also matter. (10) While refugees from Iran, Iraq, and Somalia naturalize at higher rates, those from Burma, Ukraine, Vietnam, and Liberia naturalize at lower rates.

(11) Naturalization success is significantly shaped by the initial resettlement location. (12) Placing refugees in areas that are urban, have lower rates of unemployment, and have a larger share of co-nationals increases the likelihood of acquiring citizenship. (13) These findings suggest pathways that promote refugee integration by targeting interventions.

In sentence 5 (reproduced below), the writers want to provide an explanation to help the audience contextualize the statistics given in sentence 4.

This rate is substantially higher than among other immigrants who became eligible for citizenship during the same period.

Which of the following versions of the text best achieves this purpose? (3 points)
As it is now
In other words, more than half the citizens during this time period naturalized within a short period of time.
There are many different ethnic groups which naturalized during this period, but some groups naturalized sooner than others.
This rate is based on data accumulated over a ten-year period and after following resettled refugees for five to seven years after resettlemen