Assertion `:-` The shape of trajactory depends on the acceleration and intial condition of motion.
Reason `:-` Trajectory of an object moving under a constant acceleration may be a straight line.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False

Answer

To solve the assertion and reason question, we need to analyze both statements carefully.

**Step 1: Understanding the Assertion**
The assertion states that "The shape of trajectory depends on the acceleration and initial condition of motion."
- This is true because the trajectory of any moving object is influenced by its initial velocity (initial condition) and the acceleration acting on it. For example, in projectile motion, the initial velocity and the acceleration due to gravity determine the path of the projectile.

**Step 2: Understanding the Reason**
The reason states that "The trajectory of an object moving under a constant acceleration may be a straight line."
- This is also true. If an object is moving with constant acceleration in the same direction as its initial velocity, or if the acceleration is zero, the trajectory will be a straight line. For instance, if a ball is thrown straight up, it will go up and come back down in a straight line due to the constant acceleration of gravity acting downward.

**Step 3: Analyzing the Relationship Between Assertion and Reason**
While both the assertion and the reason are true, the reason does not provide a correct explanation for the assertion. The assertion talks about the dependence of trajectory on both acceleration and initial conditions, while the reason only discusses the case of constant acceleration leading to a straight line, which is just one specific scenario.

**Conclusion**
- The assertion is true.
- The reason is true, but it does not explain the assertion correctly.

Thus, the final answer is:
- Assertion: True
- Reason: True (but not a correct explanation for the assertion)