Which of the following is an example of using the word like as a filler?
it's like the best decision you can make.
your customers would no doubt like to receive these benefits.
you can choose from several options like those presented before.
it was like i was thinking, "don't worry, everything will be fine."
none of the above

Like as a filler
means that you can take out the word 'like' and the sentance meaning remains the same

remove and see which one stays same

it's the best decision you can make
your customer would no doubt to receive these benefits.
You can choose from several options those presented before.
It was I was thinking, "Don't worry, everything will be fine."

the only one that still makes sense is the first one

answer is "It's like the best decision you can make."

The answer is focused on because it boils down to the fact means to focus on.