The sentence discusses a startup's approach that is seen as both "risky" and another (positive or neutral) quality. The blank must capture a strategy that is unconventional or daring — something that could attract attention but also raise concerns.
Clue The phrase "risky by potential investors" suggests that the approach was {unusual, ambitious, or forward-thinking} — not safe or cautious.
Option analysis
(B) innovative – means creative, new, or groundbreaking. This fits perfectly for a startup challenging the status quo. ✔
(D) bold – means courageous, daring, or willing to take risks. This aligns well with the mention of risk. ✔
Why the others are incorrect
(A) conventional – the opposite of innovative. Conventional methods are standard and would not be considered risky. ✘
(C) cautious – careful or risk-averse, contradicts the idea of being seen as "risky". ✘
(E) timid – shy or lacking courage; again, does not fit with a risky or daring image. ✘
(F) visionary – could be appropriate in some contexts, but it emphasizes long-term insight, not risk-taking or boldness directly. ✘
Conclusion The words that best convey an approach that is fresh and daring (but therefore risky) are (B) innovative and (D) bold.