Suggest a source of complementary RNA introduced into target cell that can intitiate RNAi.

Explanation

**Step-by-Step Solution:**

1. **Understanding RNA Interference (RNAi):**
- RNA interference is a biological process in which RNA molecules inhibit gene expression or translation, effectively silencing targeted genes. This mechanism is often utilized in biotechnology to create pest-resistant plants.

2. **Identifying the Role of Complementary RNA:**
- In RNAi, the introduction of complementary RNA into a target cell is crucial. This complementary RNA can form double-stranded RNA (dsRNA) with the target mRNA, leading to the degradation of the mRNA and preventing protein synthesis.

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