Answer:
D. Coding is computer programming that, when studied at a young age, can lead to future benefits.
Explanation:
Sentence D is the topic sentence that most effectively introduces Erick's essay because it focuses on the concept of coding and its future benefits when learning it early in life in a general way, which allows the author to explore and give more detailed information about what those benefits are in a more extended way. Likewise, this option is correct because it is precise, has a relation with the thesis, and tells the reader what to expect from the following paragraph.
The other options are incorrect because they narrow their scope to certain specific benefits that coding can give.
