L. l. thurstone identified seven clusters of primary mental abilities, including word fluency, memory, and inductive reasoning. he claimed that word fluencya) underlies all of our intelligent behaviors. b) is the most difficult mental ability to assess reliably. c) involves a different dimension of intelligence from that of reasoning. d) is not actually a form of intelligence.

C) involves a different dimension of intelligence from that of reasoning.

Explanation:

The theorist L. L. Thurstone presented the Two-Factor theory of intelligence which provided seven primary mental abilities. Word fluency is one of the seven primary mental abilities presented in this theory. The theorist suggests that word fluency refers to involving a different dimension of intelligence from that of reasoning. This is based on the notion that intelligence has different dimensions and that the primary mental abilities are associated with different intelligence dimensions.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

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