Question

twins
leonard clyburn
most people think that all sets of twins should look alike, but that isn’t always true. there are two types of twins: identical twins and fraternal twins. more than half of all twins are fraternal, and the rest are identical. however alike some sets of twins may seem, these two groups have some major differences.
it is usually easy to tell when twins are identical. often, they look just alike and people have a hard time telling them apart. that is because these twins have the exact same genetic information. many things about these twins are the same. they are the same gender, they have the same hair and eye color, and they have the same blood type. some studies even show that their personalities may be similar, too.
on the other hand, fraternal twins can look alike, but there are obvious differences, too. this is because fraternal twins only look as much alike as any two siblings that are not twins. there is a scientific reason why fraternal twins have differences. about half of fraternal twins’ genetic information is the same, and the other half is different. this is why fraternal twins are sometimes made up of one boy and one girl. this is also why they sometimes have different hair colors, eye colors, and blood types.
which sentence uses informal language?
a it is usually easy to tell when twins are identical.
b often, they look just alike and people have a hard time telling them apart.
c you might think that all sets of twins should look alike, but you’d be wrong.
d about half of fraternal twins’ genetic information is the same, and the other half is different.

Explanation:

• Option A: "It is usually easy to tell when twins are identical." uses a neutral and straightforward tone, which is formal.
• Option B: "Often, they look just alike and people have a hard time telling them apart." is a factual statement in a neutral tone, formal.
• Option C: "You might think that all sets of twins should look alike, but you'd be wrong." uses the second - person "you" and the contraction "you'd", which are characteristics of informal language.
• Option D: "About half of fraternal twins’ genetic information is the same, and the other half is different." is a scientific and neutral statement, formal.

Answer:

C. You might think that all sets of twins should look alike, but you'd be wrong.