"장난감은 아기의 촉각을 좋게 합니다."
Translation:Toys improve a baby's sense of touch.
Improve is the common translation of the often-used 좋게 하다 which is difficult to translate well, so take your pick: make/do ~ well, benefit, enhance, boost, promote, increase, ensure, polish, augment, develop, be good for . . .
The opposite is 나쁘게 하다 or to make/do ~ badly, harm, tarnish, spoil, impair, put off, be bad for . . .