Ambitious Curriculum
The term "ambitious" in the context of the National Curriculum Framework (NCF) 2005 refers to seeking higher aims of teaching Mathematics in schools. This means that the Mathematics curriculum is designed to go beyond narrow aims and instead focuses on broader objectives that aim to develop a deep understanding and appreciation for the subject.

Coherence in Curriculum
The Mathematics curriculum is also described as coherent, which means that it is logical, well-structured, and interconnected. It ensures that the concepts taught in different grades and topics are linked and build upon each other. This helps students see the connections between different areas of Mathematics, making it easier for them to understand and apply the concepts effectively.

Teaching Important Mathematics
Another aspect of the Mathematics curriculum is that it is designed to teach important Mathematics. The curriculum focuses on essential mathematical concepts and skills that are necessary for students to develop a strong foundation in the subject. This includes topics such as arithmetic, algebra, geometry, and data handling.

Teaching Multiple Approaches
The correct answer to the given question is option 'B', which states that the ambitious curriculum seeks higher aims of teaching Mathematics in schools. This implies that the curriculum not only focuses on teaching the basic concepts but also encourages students to think critically, solve problems, and explore various approaches to arrive at solutions.

In Mathematics, there can be multiple ways to solve a problem, and an ambitious curriculum acknowledges this by teaching students different strategies and approaches. This helps students develop a deeper understanding of the subject and enhances their problem-solving skills. It also promotes creativity and flexibility in thinking, as students are encouraged to explore alternative methods and think outside the box.

By teaching multiple approaches, the curriculum acknowledges that there are often multiple paths to finding a solution and that different strategies may be more suitable for different problems or individuals. This approach helps to foster a growth mindset among students, as they learn to embrace challenges and view mistakes as opportunities for learning.

In conclusion, the Mathematics curriculum as per NCF 2005 is described as ambitious, coherent, and teaching important Mathematics. The term "ambitious" refers to seeking higher aims of teaching Mathematics in schools, which includes teaching multiple approaches to problem-solving and encouraging critical thinking. This approach helps students develop a deep understanding of the subject and enhances their problem-solving skills.