Assertion: Hydrogen iodide readily reacts with alkenes to form alkyl halides. Reason: Aqueous hydrohalogen acids are used to prepare alkyl halides from alkenes.

Both Assertion and Reason are correct and the Reason is the correct explanation for the Assertion. Both Assertion and Reason are correct and the Reason is not the correct explanation for the Assertion. Assertion is correct but the Reason is incorrect. Both Assertion and Reason are incorrect.

Assertion is correct but the Reason is incorrect.

Dry gaseous hydrohalogenation acids are better electrophiles. In aqueous solutions, H2O acting as nucleophile may produce alcohol.