THAT makes me wonder

[luis magistrado]

Hello,

In english language I observed that the pronoun THAT ( the equivalent of QUE oR LO QUE in spanish) may be omitted in a sentence without altering the meaning, as in the sentence "It is the thing that i like most" which can be expressed as "It is the thing I like most" without losing the sense and violating the rules of english grammar.

I would like to know if this can be done in spanish also. As a learner of spanish language I will the translate the "It is the thing that i like most" as "Es la cosa lo que me gusta más".

Would it be correct if the LO QUE be omitted ?

Thank you.