Assessment for learning uses the ideas of - 

CONCEPT:

Assessment for learning:

Assessment for learning is the process of looking for and interpreting evidence for use by learners and their teachers to decide where the learners are in their learning, where they need to go and how best to get their. This is known as formative assessment.

Assessment of learning:

Assessment of learning occurs when teachers use evidence of students learning to make judgement on student achievements against goals and standards this is also known as summative assessment.

EXPLANATION:

As we know that, assessment for learning is the process of looking for and interpreting evidence for use by learners and their teachers to decide where the learners are in their learning, where they need to go and how best to get their. This is known as formative assessment.

Hence, option B is the correct answer.