Homologous structures are those that: serve the same function in different organisms share an evolutionary and developmental history in different organisms occur on homologous chromosomes all of these

The correct answer is -

share an evolutionary and developmental history in different organisms.

Homologous structures can be described as structures in different organisms/species that share common ancestor or having same evolutionary lineage but do not necessarily perform similar functions.

For example - Forelimbs of bat and humans are considered as homologous structures but both perform different function.

Thus, second option is the right answer.

. ph changes the ability of them he enzyme to dissolve in water.