True or false: a triad is a chord with 3 notes in it

All but one of the following are pairs of qualities related to the social-emotional environment of an early childhood setting. which is not related to the social-emotional environment of an early childhood setting? a. equity and authenticity b. protection and warmth c. nurturance and continuity d. respect and acceptance

(i think my answer is a, am i correct? ) a pentagonal traffic sign is a sign. a. school crossing b. parking c. wrong way d. yield

Which of these forms or genres appeared in the baroque period, but  not  previous periods?