Question

Each question below contains two sentences, and each sentence is divided into four parts A, B, C, D for the first sentence and P, Q, R, S for the second sentence. Only one part in each sentence contains a grammatical or usage error. Select the option that correctly identifies the part with an error from the first sentence and the part with an error from the second sentence. If both sentences are error-free, select “No error.” (

Q: Answer-Each question below contains two sentences, and each sentence is divided into four parts A, B, C, D...

Explanation First Sentence Part A In conditional sentences starting with if, when referring to the future, we use the simple present tense in the if-clause, not will. Therefore, will observe must be changed to the present tense verb observe If researchers across polar stations observe.... Second Sentence Part S The verb depend is always followed by the fixed preposition on or upon , not to. The phrase depend to farming is incorrect and should be corrected to depend on farming . Result The error in Sentence 1 is in Part A, and the error in Sentence 2 is in Part S. Therefore, Option A is the correct answer.