Determine whether the following argument is valid or invalid. argument: if a number is 4, then it is divisible by 2. if the number is divisible by 2, then it is even. therefore, if the number is 4, then it is even. question 2 options: the argument is valid by the law of syllogism. the argument is valid by the law of detachment. the argument is not valid. the argument is valid but does not follow the law of syllogism nor the law of detachment.