Choose the correct option to fill in the blank :
This pen is both good _____ cheap.

Question

Choose the correct option to fill in the blank : 
This pen is both good _____ cheap.

Accepted Answer

Explanation:

1. **Justification for Option 4 ("and"):**
   - The word "and" is a conjunction used to connect words of the same part of speech, clauses, or sentences that are to be taken jointly. In the sentence "This pen is both good _____ cheap," the conjunction "and" effectively links the two adjectives "good" and "cheap," indicating that the pen possesses both qualities simultaneously. The phrase "both...and" is a common correlative conjunction pair used to emphasize that two characteristics or actions are equally true or applicable. Therefore, "and" is the correct choice to complete the sentence logically and grammatically.

2. **Explanation for why other options are incorrect:**

- **Option 1 ("as well as"):**
     - "As well as" is used to add information in a way that suggests the second element is an additional feature rather than an equal one. It often implies a secondary or less important addition. In the context of the sentence, "as well as" would not fit because the structure "both...as well as" is not a standard correlative conjunction pair in English. Therefore, it does not correctly complete the sentence.

- **Option 2 ("as well"):**
     - "As well" is typically used at the end of a sentence or clause to mean "also" or "too." It does not function as a conjunction to connect two adjectives directly. Using "as well" in the blank would disrupt the grammatical structure of the sentence and fail to convey the intended meaning of the pen being both good and cheap.

- **Option 3 ("but only"):**
     - "But only" introduces a contrast or limitation, which is not the intended meaning of the sentence. The sentence aims to highlight that the pen is both good and cheap, without implying any restriction or contrast between the two qualities. Therefore, "but only" is not suitable for completing the sentence.

In conclusion, Option 4 ("and") is the correct choice because it appropriately connects the two qualities of the pen, "good" and "cheap," in a balanced and grammatically correct manner.