The question asks to identify the option that most closely matches the meaning of the underlined phrase "cope with" in the given sentence: "It is fascinating to see life forms cope with varied environmental conditions." The phrase "cope with" means to successfully deal with or manage a difficult situation or problem.

Understanding "Cope With"

In this context, "cope with varied environmental conditions" means how living things adjust, manage, or survive when faced with different or challenging surroundings and climates.

Analyzing the Options for "Cope With" Synonym

Let's examine each option to see which one best fits the meaning:

• Option 1: adopt to - The word "adopt" means to take up or start using something new. "Adopt to" is also grammatically incorrect in this context. It doesn't convey the meaning of managing or adjusting to conditions.
• Option 2: adapt to - The word "adapt" means to adjust oneself to new conditions or surroundings. This perfectly aligns with the meaning of "cope with" in the sentence, as life forms adjust to survive in different environments. For example, desert plants adapt to the dry conditions.
• Option 3: adept in - "Adept" means very skilled or proficient. While life forms might become skilled at surviving, "adept in" means being skilled *within* something. It doesn't capture the core meaning of managing or adjusting to challenges.
• Option 4: accept with - "Accept with" implies agreeing to or tolerating something, but it doesn't necessarily mean successfully managing or adjusting to it. One might accept a situation but still struggle.

Conclusion on Closest Meaning

Comparing the options, "adapt to" is the most suitable synonym for "cope with" in the given sentence. It accurately reflects the process of life forms adjusting to survive and function amidst diverse environmental conditions.