Making a hypothesis often ultimately leads to
a. a scientific question
b. conducting a scientific experiment
c. researching a scientific question in books
d. changing observations to match the hypothesis

B. conducting a scientific experiment

Explanation:

The formulation of a hypothesis which is usually a scientific explanation usually leads to the process of carrying out experiments.

Scientific methods are systematic ways in scientists seeks to explain observations.

After a hypothesis is formulated, it is then tested using different experiments to ascertain its correctness and the extent of its reliability. A hypothesis must be testable.

i think it's letter a.