I was very confused about this too. I had no idea where that 지 came from, making the word "magazine" (잡다 = to throw, 잡지 = magazine).
I had to look it up and it turns out there are two ways you can make a sentence negative:
By adding 안, typically placed immediately before the final verb or adjective.
By adding ~지 않다 to the stem of the final verb or adjective. 않다 then becomes the verb or adjective in that sentence and must be conjugated accordingly.
The three options you've written are the same way to negate a verb or adjective. They differ in speech level: the first is formal, the second is polite, and the third is plain. This is called long-form negation where you attach the auxiliary ~지 않다 to the verb or adjective you want to negate and then conjugate the new ending to the appropriate speech level.
Just two different ways to negate an adjective when making a statement or asking a question. Using 안 as an adverb is called "short form negation" while combining the adjective with the auxiliary ~지 않다 is called "long form negation".
You typically hear short form in colloquial, spoken Korean and see long form negation in formal or written Korean.
Safer than the word for catch. Oh, I see, magazine starts the same as the word for catch but there is another character/letter. https://www.duolingo.com/dictionary/Korean/%EC%9E%A1%EC%A7%80/6ca4fac5e0de9cb8442f91e8ca65376f
Scroll up for other ways to negate a verb. See LimMartin1 and the answer by mhin1.
Yes, some words have more than one meaning. English has words like that too. https://www.duolingo.com/dictionary/Korean/%EC%9E%A1%EC%A7%80/6ca4fac5e0de9cb8442f91e8ca65376f
You will know that it cannot be
do not magazine, so you can figure out that it must be its verb use "catch".