Using operational definitions to define research participants, the experimental setting, the independent or dependent variable is important for which type of validity?

The __________ is the difference in voting choices between men and women

Fill in the blank with the correct words.

Someone interested in comparing how well different countries meet certain pollution control benchmarks might consult the a. Environmental Protection Index

b. Environmental Transparency Index. c. Environmental Performance Index. d. Environmental Governance Indicators Index. e. Environmental Sustainability Index.