C is the oldest as A is younger than C.

If B is 10, A is 20. In 5 years, A will be 25.

The order is D, A, B, C, E. B is in the middle.

'Caught between a rock and a hard place' means being in a difficult situation with no easy way out.

'Bite the bullet' means to face a difficult situation, which fits the context of feeling pressured by constraints.

The idiom 'caught between a rock and a hard place' means being faced with two difficult choices.

The idiom 'talk his way out of trouble' means to use conversation to escape a difficult situation.

The complete phrase is 'To err is human, to forgive is divine.'

The correct form is 'constrain' as it fits the sentence structure.

'Enhance' is the correct verb form to indicate that constraints improve creativity.

'Restrict' is the correct verb form to use in this context.

In this context, 'table' means to postpone or set aside for later discussion.

'Acquiesced' means to accept something reluctantly but without protest, which fits the context of the sentence.

'Buttressed' means supported, which fits the context of the sentence.

Hampered means hindered or restricted, which fits the context of budget constraints.

'Scarce' is the antonym of 'abundant', which means existing in large quantities.

'Natural' is the antonym of 'artificial', which refers to something made or produced by human beings rather than occurring naturally.

'Pessimistic' is the antonym of 'optimistic', which means having a hopeful outlook.

Birds fly and fish swim; they are both actions associated with the respective animals.

A bee lives in a hive, just as a bird lives in a nest.

The idiom means to pursue a mistaken or misguided course of action, which encompasses all the options.

'Determined' indicates a strong will to achieve something, fitting the context of the sentence.

Allocate means to distribute resources effectively, which is necessary to meet a deadline.

The idiom 'take the bull by the horns' means to confront a problem directly, so 'face' is the correct choice.

The order from left to right is C, A, B, and D is to the right of E. Thus, A is in the middle.

The order is C, A, B, D. A is in the middle.

Constraints can limit the configurations of a system, often leading to a decrease in potential energy.

The subject 'constraints' is plural, so it should be 'were' instead of 'was'.

Each child gets 5 apples divided by 3 children, which equals 1.5 apples.

Dividing 5 apples by 2 friends gives each friend 2.5 apples.