Choose the best answer to complete the sentence.

Scientists can ___________ carbon footprint based on daily usage of each family.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that has the underlined part pronounced differently from the others.

Mark the letter A, B, C or D on your answer sheet to choose the word whose underlined part is pronounced differently from the rest.

Choose the word that has the underlined part pronounced differently from the others.

Choose the word whose underlined part is pronounced differently from that of the others.

Choose the word whose stress is put differently from that of the others.

Choose the best answer to complete the sentence.

The litter and ___________ from factories lead human’s lives into danger.