Multiple choice

Although some officials noted that using machines for farming in China costs more than traditional hand cultivation, the mechanization of farming in the village of Long Bow doubled the corn yield while the previous year's costs were cut in half.

  1. mechanization of farming in the village of Long Bow doubled the corn yield while the previous year's costs were cut in half

  2. mechanization of farming in the village of Long Bow doubled the corn yield while cutting costs to half those of the previous year

  3. mechanization of farming in the village of Long Bow doubled the corn yield as cost were cut to half of the previous year's

  4. farming mechanization in the village of Long Bow doubled the corn yield as it cut in half the previous year's costs

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Option B is the most concise and grammatically sound. It correctly uses 'while cutting costs' to describe the action of the mechanization.