Which of these transitional words makes it clear that the writer is about to add another idea that is similar to the first? for instance because in addition however

In addition. The question itself leads you to the "..is about to add". This indicates to broaden the explanation of something or some concept, in which it is necessary to clarify a point. Sometimes, instead of writing a similar idea it is a good practice to add a metaphor. These figures of speech go through a path that is good for just about anyone.

in addition

Explanation:

the writer is adding another idea, which means he is using an additional idea . also i took the test hehe

i need for you to know i dont know the answer

i think the life is invaluable.

you can also say immeasurable.