Read the passage.

They had come from the right, and doggedly he swam in that direction, swimming with slow, deliberate strokes, conserving his strength. For a seemingly endless time he fought the sea. He began to count his strokes; he could do possibly a hundred more and then--

What does doggedly mean as it is used in the passage?

Question 5 options:

with great speed and agility


quickly


with great determination


with extreme terror