What artist is given credit for perfecting the oil painting technique?

Which type of notes dip or blend by a quarter or half step and swoop up to higher pitches to make jazz sound more like a human voice

During the period, human figures began to appear in geometric motifs? a. revolutionary b. baroque c. late geometric d. rococo

(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