Two-month-old sheldon is snuggled in his mother’s arms. he is quietly looking around, and appears to be simply ‘absorbing’ his environment. he is attentive to sounds around him, and is very calm. sheldon’s current state would be described as

a) sleeping.
b) crying.
c) waking activity.
d) alert inactivity.

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.