"You really should be careful when handling that glass,” instructed the teacher. In this sentence, the word "you” is a(n)

reciprocal pronoun.
subjective pronoun.
objective pronoun.
intensive pronoun.

subjective pronoun

Explanation:

'You' is the subject of the sentence.

there is a sequence and logical steps to give an answer of a trouble.

1) strategy is necessary to develop an project idea.

2) to study and know the environment where you are going to work ( ecosystem).

3)   the materials resources to built the ideas.

4) to give a priority order in the context that you study. in this case human needs.