Correct answer:
Laura tiene tantos vestidos como Paula.
Here we use comparison of equality, so this just as Tan...como conveys the idea of as … as. This is used when referring that two nouns are equal to one another. To compare two nouns using another noun, we use the formula:
tanto + noun + como
So vestidos is a masculine plural noun. Finally, this sentence means:
Laura has as many dresses as Paula.
