As of the late 1980’s, neither theorists nor large-scale computer clim

A little over 6 mins- All correct.

Para1: Theorists/Computer models are not able to decide whether cloud system are helpful or hurtful for global climate. Two types of cloud systems are presented to support this fact.
# S. Clouds # C. Clouds
What could author present next? May be more on why Theorists/Models are not able to decide on cloud systems.
Para2: Further strengtheners are presented to consolidate the facts given in Para1.
#14 models

Overall: A fact was presented and later further examples were presented to support the fact.

Q1. The author of the passage is primarily concerned with

(A) confirming a theory------------------No Confirmation of any theory
(B) supporting a statement--------------Support has been given to the provided fact. Correct.
(C) presenting new information---------No New info
(D) predicting future discoveries--------Some part of future predictions were described in 2nd para but predicting future "discoveries" is far fetched.
(E) reconciling discrepant findings-----What are discrepant findings? Irrelevant.

Q2. It can be inferred that one reason the fourteen models described in the passage failed to agree was that

(A) they failed to incorporate the most up-to-date information about the effect of clouds on climate
-----Most up to date- Can't infer.
(B) they were based on faulty information about factors other than clouds that affect climate
-No where it's mentioned that the info were faulty.
(C) they were based on different assumptions about the overall effects of clouds on climate
-- Correct.
(D) their originators disagreed about the kinds of forecasts the models should provide
--No info given about what originators agreed/disagreed on the forecasts.
(E) their originators disagreed about the factors other than clouds that should be included in the models
--No info given about what originators agreed/disagreed on the factors..

Q3. It can be inferred that the primary purpose of the models included in the study discussed in the second paragraph of the passage was to

I was confused between A and B but later chose A.

"With such discrepancies plaguing the models, scientists could not easily predict how quickly the world’s climate would change, nor could they tell which regions would face dustier droughts or deadlier monsoons." I think by this statement it's reasonable to believe that the models are to predict future changes in the world's climate and not to predict effects of cloud system on world's climate.

Q4. The information in the passage suggests that scientists would have to answer which of the following questions in order to predict the effect of clouds on the warming of the globe?

(A) What kinds of cloud systems will form over the Earth?-------------------------------------Hold
(B) How can cloud systems be encouraged to form over the ocean?-------------------encouraged to form over ocean??
(C) What are the causes of the projected planetwide temperature increase?------------the passage has info about cloud systems only. So OOC.
(D) What proportion of cloud systems are currently composed of cirrus of clouds?----cloud was just an example to show that why scientists were not able to decide on cloud systems.
(E) What proportion of the clouds in the atmosphere form over land masses?-----Out of context.
Hence A

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