Which of the following sentences is punctuated correctly?

a. while his dad put the jack under the car, trey looked for the tire iron in the trunk.

b. while his dad put the jack under the car; trey looked for the tire iron in the trunk.

c. while his dad put the jack; under the car, trey looked for the tire iron in the trunk.

d. while his dad put the jack, under the car trey looked for the tire iron, in the trunk.

The sentence which is punctuated correctly is this one:

A. While his dad put the jack under the car, Trey looked for the tire iron in the trunk.

The use of comma is evident in this sentence to separate the dependent and independent clauses and initiate a brief pause between them.

The issue of racism greatly inflience herbecause by then there was racio discrimination in the south this affects her such that she will grow up favouring people of her race and undermining the othersracism will build herin earlier days the people of south were oppressed by the whites since they were considered slaves or subject yo the whites.so as a result of this the whites children grew up bearing in mind that they were more superpower than the black