Spanish language Q&A Forum

Coma todo por favor
it's conjugated to the imperativo 

I am having trouble with these.  I was thinking "con el que", "para el que", etc meant "... which"  as in 5124

and that "con lo que" and "de lo que", etc. meant "... what", as in 5125.

But then I missed some questions because I used "con el que" instead of the correct "con lo que".  Can you help me out?

Thanks

In the quiz answer 'Cuando bebe leche, siente como si fuera a vomitar', why is 'siente' not 'se siente' used?

Preferir... que... just means: prefer... than... .Doesn't it?

Preferir... en vez de... means: prefer... rather than.... Why? I don't understand.

Thank you so much

One question on a quiz I just took was something like 

 _________ menos me impresiona del cuadro es el color. (What impresses me least about this picture is the color.) 

I entered 'Lo que el,' which was wrong.  The correct response was 'Lo que.'  To me, this seems to mean 'What impresses me less..., ' and it strikes me as a tricky combination of the lessons about 'lo que, etc', and 'el menos/la menos etc.'  The lesson that I was referred to for review was the 'lo que etc.' lesson, but I found no example of it used immediately followed by a superlative.  

It's been my understanding that an article is required to form a superlative (as in - menos=less, el/la/los/las/lo menos=the least).  So it seems that the superlative article gets dropped immediately after 'lo que?'  What if the sentence had been constructed slightly differently, 'Lo que me impresiona el menos del cuadro es el color?'