Directions: Select the phrase/connector (it must be at the start) from the given three options which can be used to form a single sentence from the two sentences given below, implying the same meaning as expressed in the statement sentences.

Q:

Scientists build climate models—computer simulations of the climate system. They are doing this to further explore the causes and effects of global warming.
(i) To further explore___
(ii) Scientists are building____
(iii) Predicting effects of global warming___

• 1
  Only (i) is correct
• 2
  Only (ii) is correct
• 3
  Only (iii) is correct
• 4
  Both (i) and (ii) are correct
• 5
  All are correct