Sal and Sadie have been married for 40 years. When asked to compare their current relationship to when they were newlyweds, they are most likely to say that:

Explanation:

Since Sal and Sadie have been married for 40 years, they must be at an old age.  During old age, people become frail and does not fancy the finer things of life anymore. They do not have much choices or interest because of their old age.

At this point of time, they rather stick to what they have in their life and gets more obsessive towards them. It may be their grandchildren, pets, house, or partners.

So, when asked to compare their current relationship to when they were newlyweds, they are most likely to say that they love each other more now than they did earlier.

the answer would be in this answer. someone already asked the question.