What can you hold in your right hand but never in your left hand

(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

Was prevalent in art in northwestern europe during the middle ages? a. geometric motifs b. abstraction c. pointillism d. animal style

What is one popular pop artist or group (from today or from the past)? why does this person/group's music fit into the pop genre? why do you think the person/group was successful with their music?