In its depiction of the dramatic difference in parenting techniques around the world, the documentary film babies is humorous, eye opening, and

quite educational or educated viewers

Quite educational

Explanation:

The words before blank describing the film "Babies" are adjectives i.e. "humorous" and "eye opening", so we need to fill the blank by a suitable adjective ("quite educational") to keep the text structure parallel.

Filling the blank by "educated viewers" would be incorrect because of violating the rule of parallel text structure.

Parallel text structure means to use same pattern of words, phrases, or clauses to show that two or more ideas are at the same level of importance. Parallel structures are usually joined by conjunctions such as "and" or "or."

main idea: it is important to prepare today for the needs of tomorrow.

the grasshopper was dying due to hunger, and this was because he didn't prepare for the winter.

the ants told the grasshopper, "if you were foolish enough to sing all the summer, you must dance supperless to bed in the winter."

the ants were spending a fine winter's day drying grain collected in the summertime.

as marlow travels down the river towards kurtz's inner station, their steamboat is attacked by african natives. interestingly, marlow notices that the natives are only shooting small arrows the size of twigs at the steamboat in an attempt to scare them away and halt their journey.

explanation: