Which sentence would be best to include in a summary of this report?

A These students’ amazing achievement has made life easier for deaf
children all over the world.
B Nicaraguan Sign Language has rules for how it is used.
C Someone should have thought of a way to help these children
communicate before the 1980s.
D Deaf children in Nicaragua have transformed a simple system of
gestures into a complex new language.

Ineed . read the passage, and choose the two (2) inferences that are most firmly based on the given information. although lie detector tests are based on a sound principle, they are not alwaysaccurate. the test is based on the fact that people become emotionally “stirred up”when they lie. the lie detector can sense physical changes that accompany suchemotional responses. but an innocent person may react emotionally to a keyquestion.thus, he or she appears to be lying when actually telling the truth. and criminals who lie often may feel no guilt about anything. they can therefore tell huge lies without showing the slightest emotional ripple on the lie detector. without an emotional response, there are no physical responses to detect. 1. criminals never feel any guilt about their crimes. 2. lie detector tests are not foolproof. 3. anyone can easily fool the lie-detector machine. 4. an emotional response by an innocent person