Step 1: Understanding the sentence.
The sentence refers to a historical fact — Shah Jahan constructed the Taj Mahal in the 17th century. Therefore, it must be in the past tense.
Step 2: Analyzing the options.
- (a) builded: Incorrect; “builded” is not a valid past form.
- (b) will build: Future tense — incorrect.
- (c) building: Present participle — incorrect.
- (d) built: Correct past form of “build.”
Step 3: Grammar Note.
The simple past form of “build” is “built.” Example: “They built a house last year.”
Step 4: Constructing the correct sentence.
“Shah Jahan built the Taj Mahal.”
Step 5: Conclusion.
Thus, “built” is the correct form of the verb.