A word has been given in each question and has been used in the sentences given below. Identify the statements where the word has been used in a contextually and grammatically correct manner. If the word has been used correctly in all the three statements, then mark (e), “All of these”, as your answer.

INTEREST
(i) She developed a keen interest in painting during her college years and has since become a talented artist.
(ii) The company's new product generated a lot of interest among consumers due to its innovative features.
(iii) Sarah's interest in environmental conservation led her to volunteer at a local wildlife sanctuary.

The correct answer is All of these (Option e).

Let us analyze the usage of the word INTEREST in each of the given sentences to check for grammatical and contextual correctness:

(i) "She developed a keen interest in painting during her college years and has since become a talented artist."
Here, interest is used as a noun meaning a feeling of wanting to give your attention to something or learn more about it. The sentence is grammatically correct and contextually appropriate.

(ii) "The company's new product generated a lot of interest among consumers due to its innovative features."
Here, interest refers to the attention or curiosity of consumers regarding a new product. The phrase "generated a lot of interest" is standard and correct both contextually and grammatically.

(iii) "Sarah's interest in environmental conservation led her to volunteer at a local wildlife sanctuary."
Here, interest again denotes a passion, concern, or enthusiasm for a particular subject (environmental conservation). The sentence is completely correct in its structure and meaning.

Since the word INTEREST has been used correctly in all three statements, the correct choice is All of these.