The writer is trying to improve cohesion in the paragraph. Which words or phrases would best connect the ideas presented? Providing all students with laptops will not automatically improve academic growth and increase student engagement. Some say that highly effective teachers are needed. , some might say that technology can fill instructional gaps. Those in favor of technology believe that technology provides students with immediate feedback and access to grades. , students also have direct access to their teachers and instructional programs that can help improve their learning. , supporters of technology claim naysayers are just worried about change.

the legal limit for the drivers who can drive after consuming any amount of alcohol is 21 years.

explanation:

on november 1, 1996, a "zero tolerance law" was put into effect in the new york state.

according to this zero tolerance law, for people under the age of 21 years, it was illegal to purchase and possess alcohol or to drive after consuming any amount of it.

also, the alcohol involvement rate for the drivers under the age of 21 was roughly twice that of elderly drivers.

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.