Select the phrase(s) from the given three options which

Solution

The sentences are contradictory - A tells us that secretion of insulin is tightly controlled and a healthy part of our body’s sugar-regulation mechanism. B contradicts this by telling us how insulin is significantly elevated in people who have diabetes. 2 is correct as BUT is used to show contradiction - “Secretion of insulin is usually tightly controlled and a healthy part of our body’s sugar-regulation processes, but it can be significantly elevated in people with obesity-related pre-diabetes or diabetes due to insulin resistance.” 3 is correct as ALTHOUGH is used to show contradiction - “Although secretion of insulin is usually tightly controlled and a healthy part of our body’s sugar-regulation processes, it can be significantly elevated in people with obesity-related pre-diabetes or diabetes due to insulin resistance.”