of course social media companies need to develop (A)/

Solution

The sentence is not correct in its present form which is clear from its first sentence itself, hence, option 5 can be ruled out easily. If we look at the fragments, the fragment A is the valid to be the first fragment, so, we have to look for the options starting with fragment A which means that option 1 and option 3 can be ruled out. If we rearrange the fragments according to option 2, we will get a meaningful sentence. A- Of course social media companies need to develop D- better radars against the harassment of women C- but at the same time the social equations B- that are being mirrored online must change