due to its fame as the worlds tallest mountain, mount everest attracts thousands of mountain climbers each…

due to its fame as the worlds tallest mountain, mount everest attracts thousands of mountain climbers each year. however, the worlds second tallest mountain, known as k2, is much more technically challenging to climb than everest. ______ k2 tends to draw expert climbers seeking a more demanding experience. which choice completes the text with the most logical transition? choose 1 answer: a for this reason, b by contrast, c for instance, d previously,
Answer
Brief Explanations:
The first sentence states that K2 is more technically challenging. The second sentence says K2 draws expert climbers. There is a cause - effect relationship. "For this reason" indicates a cause - effect transition. "By contrast" is for comparison (but the first part already compared Everest and K2 in terms of challenge, and the second part is a result). "For instance" is for giving an example (not an example here). "Previously" is about time (no time context here).
Answer:
A. For this reason,