# Assessment 1 #### What happens when OP\_VERIFY encounters a zero value on top of the stack? * [ ] Replaces it with OP\_FALSE * [ ] Skips to the next OP\_ENDIF * [x] Immediately terminates the script and marks it as failed * [ ] Continues execution normally \ **Notes to Learners** OP\_VERIFY is a gating function. When it encounters zero (false), it immediately terminates script execution with failure. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://hub.bsvblockchain.org/higher-learning/bsv-academy/bsv-opcodes/op_nop-op_ver/assessment-1.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.