A group of preschool-age children are enrolled in a study that plans to follow them over time in order to assess behaviors and other characteristics that may predict later development of schizophrenia. This is an example of a(n) design.
1) longitudinal
2) cross sectional
3) experimental
4) survey

1. Longitudinal.

Explanation:

Longitudinal Design or study is a type of research in which researchers study a group of participants over an extended period of time.

In the given case, a group of preschool-age children are enrolled to study their behavior and other development over a period of time. This study is performed so that predicted behavioral patterns could be studied in schizophrenia development.

So, the correct answer is option 1.

texas governor sam houston opposed secession, but was unable to prevent it. in this speech, given prior to lincoln's election, he presents the argument that slavery would be safer within the united states than outside of it. it was a prescient argument, and one held by several other southern leaders.

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the answer is:

c. economic output