A reading comprehension question

Hello everyone. I have a question.

I have a reading comprehension question whose correct answer, apprently given by a nonnative teacher, is dubious. So I need your help.

Below is the passage and the question. Which of the four items do you think is the correct answer? --

In recent years, emergency measures have been taken mainly at the initiative of municipalities to contain the damage through intensive efforts to hunt or capture wild animals and to erect fences to stop them from entering farmlands. But these efforts have done little to reduce crop damage.

In December, the central government set a target of halving the deer and boar populations within 10 years. Similar targets were also set for Japanese macaque monkeys and great cormorants. An amendment to the law on protection of wild animals, now under deliberation in the Diet, adds population control of these animals as the purpose of the legislation.

Prefectural governments will be tasked to come up with plans to control the number of wild animals and birds whose population is sharply rising or whose habitat is expanding. The amendment will authorize nighttime hunting in local government-organized programs and creation of a system to certify businesses that engage in organized hunting.

Controlling the population of these animals will be a challenge. The deer population outside of Hokkaido, which stands at 2.61 million, increases by roughly 20 percent each year. Only 10 percent of that population are either hunted or captured annually.

To start reducing their population, the number to be hunted must be more than doubled and such efforts must be kept up each year. That will require more manpower and budgetary resources than currently spent.

Under the amendment, national and prefectural governments are to organize intensive programs to hunt the animals across municipal borders. Prefectural governors will certify local hunting associations, nonprofit organizations or security firms to engage in the endeavor. Sufficient budgetary allocation will be needed to ensure that such efforts will be aided by people with expert knowledge.

In addition to hunting the animals, measures to separate their habitats from human communities and farmlands — such as installing fences, patrols and making sure that surplus produce that will attract animals is not left on farms — would also be effective.

Question: What will national and prefectural governments need to do to solve this problem?

(1) They should organize much stricter controls on local communities to reduce people numbers.

(2) They should arrange for people with expert knowledge to pay more for wild animal controls.

(3) They should use similar methods to those used previously, but on a bigger and organized scale.

(4) They should separate towns and farmland to prevent people from entering each other's areas.