Answer:
The sentence that is correct in the use of parallelism is:
2. When the Black Death struck Europe in 1348, the illness spread because of the garbage people threw in the streets and the lack of sanitary living. CORRECT
Step-by-step explanation:
Parallelism consists of the repetition of a certain grammatical structure inside a sentence with the purpose of avoiding confusion. Parallel structures make the speech clear, interesting, and easy to understand. Now, let's correct the sentences that do not contain proper parallel structures:
1. In 1031, the Japanese began to recycle and then repulsed their paper. - In 1031, the Japanese began to recycle and then to repulse their paper (now both verbs have "to" before them).
3. One of the early purposes of the Salvation Army was to collect, sorting, and recycling used or unwanted items. - One of the early purposes of the Salvation Army was collecting, sorting, and recycling used or unwanted items (now, all the verbs listed have -ing).
4. Today, neighborhoods are filled with dark green cans for trash and bright blue cans in order for people to be able to recycle. - Today, neighborhoods are filled with dark green cans for trash and bright blue cans for recyclables (now, both times the word "cans" is used, it is followed by "for + noun").