The teacher already
the lesson.
had began
OB. beginned
o C begun
CD has begun

has begun

The teacher already has begun the lesson.

Explanation:

The sentence seems to be missing a verb, which has to be chosen out of the provided options. Given that the subject is the teacher, the proper conjugation should be made with the pronoun 'he'. If the verb was conjugated in the past, it should be 'he began', while in Past perfect it would be 'he had begun', but neither of those options is provided.

Therefore, we can only assume that the verb is conjugated in the Present perfect, so the correct answer is 'he has begun'.

the african society basically suffered the consequences of colonization and apartheid directly attacking the black people, first, during the colonialism and its main idea which which "white people" had better rights, affecting   them principally in the right to establish black people in their territories, access to quality education and health services and took away any civil right even to the black people to feel they have the same opportunities as the settlers.

first one is your answer

~coco