Complete the given sentence with the most suitable Phrasal Verb:

You will have to _____ to a website to get the latest information on this topic.

log in

The correct answer is Option (1) → log in

Explanation:
- "Log in" is the appropriate phrasal verb for accessing a website or online platform by entering your credentials (such as username and password).
- "Log off" means to disconnect from a website or online platform, which is the opposite action.
- "Log by" and "log out" are not commonly used phrasal verbs in the context of accessing a website or online platform.