Final answer:
Without the context of the text mentioning Dexter's choice, the correct answer cannot be determined. The options suggest reasons ranging from personal preference for mental arithmetic to financial and practical concerns. For the sake of example, let's say the correct answer is: A) He preferred mental math.
Step-by-step explanation:
The question pertains to a character named Dexter and his preference regarding the use of a pocket calculator. This seems to be a comprehension question based on a text that was likely provided during a lesson. To determine the reason Dexter did not want a pocket calculator, one would have to know more details about the context within which this character makes this choice. However, based on the options given, we can infer that Dexter's rationale for not wanting a pocket calculator could be personal or practical. The reasons provided suggest a range of possibilities including a preference for mental calculation (preferred mental math), financial constraints (couldn't afford it), a perception that the tool is not needed (found them unnecessary), and doubts about technological reliability (didn't trust the accuracy). Without additional context, it's challenging to pinpoint the exact motive, but these options suggest a mix of subjective preference and objective assessment that could influence Dexter's decision.
Considering the options presented:
- Preferred mental math: Dexter may believe in the importance of strengthening mental arithmetic skills and choose not to rely on electronic aids.
- Couldn't afford it: Financial considerations could prevent Dexter from acquiring a calculator if he feels it's out of his budget range.
- Found them unnecessary: Dexter may find himself in educational or professional scenarios where calculating devices are redundant.
- Didn't trust the accuracy: It's possible that Dexter has encountered or heard of inaccuracies in electronic calculating devices and thus prefers more traditional methods to ensure correctness.
Without the text, the correct answer is indeterminable; however, for educational purposes, let's consider option A is correct: Dexter preferred mental math.