Which person would most likely want to invest all of his or her savings in an IRA?
A. A student who wants his money to grow as quickly as possible
B. A retiree who is most interested in keeping her deposits safe
ООС
C. A teacher who would like to have a diversified set of investments
OD. A doctor who wants to avoid paying taxes on retirement income

C. A teacher who would like to have a diversified set of investments

Explanation:

IRA stands for Individual Retirement Account. So, it's aimed for people who haven't entered retirement age. (this eliminate option B)

Average annual return for IRA is only between 7-10%. It's not the fastest method to grow your investment. (this eliminate option A.)

Traditional IRA generally tax free, but there are several exceptions made for people in high paying jobs. (Doctors are only allowed to put $7,000 in non-taxable account) (This eliminate option D)

When you put  your money in an Individual Retirement Accounts, your money will be re-invested by the Custodians. The custodians will spread your investment into several sectors in order to minimize the risk of losing it during a crash. (This is why Option C is the answer)

it is a better alternative

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.