Question

Fill in the blanks with the correct combination of tenses for the given sentence: Darwin's work (i) _____ a related effect that (ii) _______ influenced the development of environmental politics - a 'decentering' of the human being. 
 

• A. (i) have (ii) had
• B. (i) had (ii) have
• C. (i) had (ii) has
• D. (i) has (ii) have

Hint:

When filling tense blanks, balance historical facts (past tense) with continuing relevance (present tense). This is especially common in academic or scientific contexts.

Answer 1

The Correct Option is C

Step 1: Analyze the subject. The subject is "Darwin's work," which is singular. Therefore, the verb must agree with the singular subject. 

Step 2: Consider tense logic. - Darwin's work is historical (in the past). So the first blank should be in the past tense $\Rightarrow$ (i) "had." 
- The effect, however, continues to influence environmental politics in the present. So the second blank should be in the present tense $\Rightarrow$ (ii) "has." 

Step 3: Eliminate incorrect options. - (A) "have ... had": Incorrect, because "Darwin's work" is singular, so "have" is wrong. 
- (B) "had ... have": Incorrect, because "have influenced" refers to the past, but the intended sense is present influence. 
- (D) "has ... have": Incorrect, because both verbs in present tense do not fit the historical + continuing effect balance. 
Step 4: Correct option. Thus, the grammatically and contextually correct answer is: \[ \boxed{(i)\ \text{had}, \ (ii)\ \text{has}} \]