The correct answer is: D. need, cope
The word “need” is used to express a requirement or necessity. In this case, the people need a sound infrastructure in order to cope with the new challenges. The word “cope” means to deal with something successfully, especially difficult or challenging situations.
The other options are not as suitable. The word “want” is used to express a desire or wish. In this case, it is not clear that the people want a sound infrastructure, only that they need it. The word “got” is the past tense of the verb “get”, which means to obtain or receive something. In this case, it is not clear what the people got, only that they need a sound infrastructure. The word “have” is used to express possession or ownership. In this case, it is not clear that the people have a sound infrastructure, only that they need it. The word “met” is the past tense of the verb “meet”, which means to come together or to encounter someone or something. In this case, it is not clear what the people met, only that they need a sound infrastructure.
In conclusion, the correct answer is: D. need, cope