Revise the Following Sentences So That They Have Parallel Structure

question 19

Short Answer

Revise the following sentences so that they have parallel structure.
-The meeting began at 10; 12 was the time it ended.

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Definitions:

Inverted-U Theory

A hypothesis suggesting that a relationship between two variables follows an upside-down U shape, often applied to the correlation between productivity and stress levels.

R&D Expenditures

Financial investments made by firms, governments, or institutions in research and development activities aimed at innovation, creating new products, or improving existing ones.

Industry Concentration

A measure of the extent to which a small number of firms dominate the total production, sales, or market share in an industry.

Pure Competitors

In a purely competitive market, companies sell products that are perfect substitutes for one another, leading to no control over market prices by individual firms.