can you please help me answer these questions as well as a little explaination on why. doesnt have to be long just so I can better understand. thank you

Styles 11. What percent of net investment income tax is assessed on Form 8960? a. 2.80% b.3.20% c. 3.80% d. 4.20% 12. Which of the following is not true of the adoption credit for a special needs adoption? a. The special needs criteria are determined by the state. b. The credit can be taken even if there are no expenses. c. The child has to be disabled for the adoption to be considered special needs. d. It is a nonrefundable credit. 13. Which of the following is not one of the 4 due diligence requirements for tax return preparers and EIC? a. A tax return preparer must know the EITC tax laws thoroughly. b. A tax return preparer is not required to evaluate his or her client's information. C. A tax return prepare must ask questions based on his or her client's information and EIC eligibility. d. A tax return preparer must keep records showing how you calculated credits. 14. The maximum number of qualifying children that can be claimed for the earned income credit is: a. Three b. Four c. Two d. One 15. What is the filing requirement for a taxpayer, age 45, and head of household? a. $12,000 b. $13,600 c. $18,000 d. $19,600 16. Nevada is single and provides a home for his girlfriend, Lois, and her 5 year old daughter Corky. Lois worked in a bakery and earned $3,800. She has no other income. Lois and Corky lived all year with Nevada and he provided all of their support. What is Nevada's filing status? a. Single b. Head of Household c. Married Filing Separate d. Married filing Joint 11. What percent of net investment income tax is assessed on Form 8960? a. 2.80% b. 3.20% c. 3.80% d. 4.20% 12. Which of the following is not true of the adoption credit for a special needs adoption? a. The special needs criteria are determined by the state. b. The credit can be taken even if there are no expenses. c. The child has to be disabled for the adoption to be considered special needs. d. It is a nonrefundable credit. 13. Which of the following is not one of the 4 due diligence requirements for tax return preparers and EIC? a. A tax return preparer must know the EITC tax laws thoroughly. b. A tax return preparer is not required to evaluate his or her client's information. c. A tax return prepare must ask questions based on his or her client's information and EIC eligibility, d. A tax return preparer must keep records showing how you calculated credits. 14. The maximum number of qualifying children that can be claimed for the earned income credit is: a. Three b. Four c. Two d. One 15. What is the filing requirement for a taxpayer, age 45, and head of household? a. $12,000 b. $13,600 c. $18,000 d. $19,600 16.Nevada is single and provides a home for his girlfriend, Lois, and her 5 year old daughter Corky. Lois worked in a bakery and earned $3,800. She has no other income. Lois and Corky lived all year with Nevada and he provided all of their support. What is Nevada's filing status? a. Single b. Head of Household c. Married Filing Separate d. Married filing Joint