STAAR Master Writing

How should this sentence be changed? 
There's science behind the alarm clock that wakes you up, the weather report that influences what you wear, the toothpaste you use to brush your teeth, and even the clean water that comes from your fawcet.

• Delete the comma after up
• Change comes to come
• Change fawcet to faucet
• The sentence is correct as it.

How should this sentence be changed?
Clearly, the world you live in today wouldn't be the same without the contributions of many dedicated scientists and there work.

• Change without the to without no
• Change contributions to contribution's
• Insert a comma after scientists
• Change there to their

What is the correct sentence?

• Len Fisher is a scientist who has made a career out of researching ordinary things in life.
• Len Fisher, a scientist making a career out of researching ordinary things in life.
• Len Fisher is a scientist. Who has made a career out of researching ordinary things in life.
• Len Fisher is a scientist he has made a career out of researching ordinary things in life.

How should this sentence be changed?
After two different investigations and the testing of approximately 200 cookie-and-drink combinations Fisher announced the teams' findings.

• Change investigations to investagations
• Insert a comma after combinations
• Change teams' to teams
• Make no change.

How should this sentence be changed?
Chocolate milk, for example, caused a cookie to release as much as 11 times more flavor then other drinks.

• Delete the comma after milk
• Change caused to causing
• Change then to than
• Make no change.

How should this sentence be changed?
If the cookie was dunked too long, the liquid dissolved the sugar in the cookie and made them fall apart.

• Change too long to to long
• Change and to this
• Change them to it
• Make no change

How should this sentence be changed?
The teams were most surprised to learn that hot liquids, such as tea and coffee, didn't score good in their tests.

• Insert a comma after surprised
• Delete the comma after coffee
• Change good to well
• Make no change

What is the correct sentence?

• Of course, there are people who argue that researching frivolous things like cookie dunking is a waste of time and money.
• Of course, there are people who argue that researching frivolous things like cookie dunking. It is a waste of time and money.
• Of course, there are people they argue that researching frivolous things like cookie dunking is a waste of time and money.
• Of course, there are people who argue. That researching frivolous things like cookie dunking is a waste of time and money.

How should this sentence be changed?
Dad talked frequently about wanting to keep all his staff employed at Coe's dry cleaners.

• Change talked to talking
• Change frequently to freqently
• Change dry cleaners to Dry Cleaners
• Make no change

How should this sentence be changed?
In fact, my sister and I became so interested in the topic that we decide to base our joint science project on the concept of increasing efficiency by replacing a human worker with an automated one.

• Change decide to decided
• Change efficiency to efficiently
• Change automated to automatted
• Make no change