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

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

The rate of urbanization in Indonesia increased by 3% in 1969 followed by a slight fall to 17% in 1960.

The rate of urbanization in Indonesia rose to 20% before falling to 17% in the period of nine years from 1960.

In 1960, the rate of urbanization in Indonesia was about 17% after falling slightly by 3% in the period of nine years.

In 1960, the rate of urbanization in Indonesia was about 17% followed by a slight increase of 3% in 1969.

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.

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.

If public transport is improved, traffic congestion in urban areas can be reduced.

Traffic congestion in urban areas can be reduced although public transport is improved.

Traffic congestion in urban areas can be reduced despite public transport is improved.

If public transport is improved, traffic congestion in urban areas cannot be reduced.

Urbanisation brings economic development whereas it also causes environmental pollution.

Urbanisation brings economic development as it also causes environmental pollution.

Urbanisation brings economic development so it also causes environmental pollution.

Urbanisation brings economic development because it also causes environmental pollution.

The rapid urbanization is the cause of many serious problems such as the growth of slums.

The rapid urbanization is consequent of many serious problems like the growth of slums.

The rapid urbanization is created by many serious problems such as the growth of slums.

The rapid urbanization is resulted by many serious problems like the growth of slums.

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.