Choose the sentence that best combines each pair of sentences given.

More factories are built in cities. Air quality gets worse.

The price decreased by 280 in 1995 before stabilizing for the next 3 years.

The price decreased for 280 in 1995 before leveling off for the next 3 years.

The price increased by 280 in 1995 before leveling off for the next 3 years.

The price increased for 280 in 1995 before stabilizing for the next 3 years.

Many young people move to cities although they want to seek better job opportunities.

Many young people move to cities in order to seek better job opportunities.

Many young people move to cities because they want to seek better job opportunities.

Many young people move to cities, so that they want to seek better job opportunities.

Twice as many people were unemployed in 2005 compared to 2009.

Twice as many people were unemployed in 2009 than in 2005.

There were twice as many unemployed people in 2005 compared to 2009.

There were twice as many unemployed people in 2009 as in 2005.

The availability of seasonal produce experienced a stable period.

The availability of seasonal produce is recorded leveling off.

The availability of seasonal produce hardly moved up and down.

The availability of seasonal produce went through a period of erratic.

There was a rise by 30% in the rate of unemployment.

There was a rise of 30% in the rate of unemployment.

There was a rise to 30% in the rate of unemployment.

There was a rise up 30% in the rate of unemployment.

The demand for labor force declined.

The demand for labor force increased.

The demand for labor force reduced.

The demand for labor force remained stable.

Although increasing urbanization has led to problems, but cities are centers of civilization and culture.

Despite increasing urbanization has led to problems, but cities are centers of civilization and culture.

In spite of increasing urbanization has led to problems, yet cities are centers of civilization and culture.

Though increasing urbanization has led to problems, cities are centers of civilization and culture.